Web Developer Tutorials – Beginner to Advanced Web Development Guides

Reusable PHPMailer Function (To + CC + BCC + Attachments)

2025-11-25T18:45:00.000+05:30

<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'PHPMailer/src/Exception.php';
require 'PHPMailer/src/PHPMailer.php';
require 'PHPMailer/src/SMTP.php';

function sendMail($to, $subject, $message, $from_email, $from_name, $cc = [], $bcc = [], $attachments = []) {

$mail = new PHPMailer(true);

try {
// SMTP SETTINGS
$mail->isSMTP();
$mail->Host = "smtp.yourserver.com";
$mail->SMTPAuth = true;
$mail->Username = "your-email@domain.com";
$mail->Password = "your-smtp-password";
$mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
$mail->Port = 587;

// FROM & TO
$mail->setFrom($from_email, $from_name);

// To accepts single or array
if (is_array($to)) {
foreach ($to as $email) {
$mail->addAddress($email);
}
} else {
$mail->addAddress($to);
}

// CC array
if (!empty($cc)) {
foreach ($cc as $email) {
$mail->addCC($email);
}
}

// BCC array
if (!empty($bcc)) {
foreach ($bcc as $email) {
$mail->addBCC($email);
}
}

// Attachments
if (!empty($attachments)) {
foreach ($attachments as $file) {
if (file_exists($file)) {
$mail->addAttachment($file);
}
}
}

// CONTENT
$mail->isHTML(true);
$mail->Subject = $subject;
$mail->Body = $message;

$mail->send();
return true;

} catch (Exception $e) {
return "Mailer Error: " . $mail->ErrorInfo;
}
}
?>

✅ How to Use


include("mail_function.php");

$to = ["user1@example.com", "user2@example.com"]; // To multiple
$cc = ["manager@example.com", "teamlead@example.com"];
$bcc = ["audit@example.com"];

$subject = "Test Mail";
$message = "<h3>Hello Team</h3><p>This is a test email.</p>";

$from_email = "support@yourdomain.com";
$from_name  = "Your Company";

$attachments = ["uploads/report.pdf"];

$result = sendMail($to, $subject, $message, $from_email, $from_name, $cc, $bcc, $attachments);

if ($result === true) {
    echo "Mail sent successfully!";
} else {
    echo $result;
}

Simple Auto-Delete Sessions After 8 Hours

2025-11-03T09:40:00.003+05:30

Use this file at the top of every PHP page (before any output):

🧩 What This Does

✅ Stores session files in /sessions/ folder.
✅ Automatically deletes files older than 8 hours (every time a session starts).
✅ Ensures PHP’s garbage collection also respects 8-hour lifetime.
✅ Fully standalone — no cron job or database needed.

<?php
// Folder to store sessions
$sessionPath = __DIR__ . '/sessions';

// Create folder if not exists
if (!is_dir($sessionPath)) {
mkdir($sessionPath, 0700, true);
}

// Set PHP to use this folder for session files
ini_set('session.save_path', $sessionPath);

// Delete old session files (older than 8 hours = 28800 seconds)
$files = glob($sessionPath . '/sess_*');
$now = time();
foreach ($files as $file) {
if (is_file($file) && ($now - filemtime($file)) > 28800) { // 8 hours
unlink($file);
}
}

// Set session lifetime (for garbage collection)
ini_set('session.gc_maxlifetime', 28800); // 8 hours
ini_set('session.gc_probability', 1);
ini_set('session.gc_divisor', 1);

// Start the session
session_start();
?>

step-by-step guide to set up Facebook Lead Ads Webhook inside your Facebook App to receive leads on a PHP server

2025-07-08T13:57:00.007+05:30

Here’s a step-by-step guide to set up Facebook Lead Ads Webhook inside your Facebook App to receive leads on a PHP server:

1. Create a Facebook App

Go to: https://developers.facebook.com/apps

Click "Create App"

Select "Business" as the type

Set:

App Name

Contact Email

Click Create App

2. Add Webhooks Product

Inside your App, click “+ Add Product” on the left

Find Webhooks and click "Set Up"

3. Set Up Webhook for Page Object

Click "Subscribe to this object" under Page

In the form:

Callback URL → your live PHP script URL (e.g. https://yourdomain.com/webhook.php)

Verify Token → use a custom string (e.g. my_verify_token)

Click Verify and Save

⚠️ Your server must:

Use HTTPS

Respond with hub.challenge for verification (handled in webhook.php)

4. Add Permissions

Under App Review > Permissions and Features, request:

pages_read_engagement

leads_retrieval

pages_manage_metadata

🧪 For development:

Add yourself as a Tester or Admin

Connect a test Facebook Page with a Lead Ad form

5. Generate Page Access Token

Go to Graph API Explorer:

Select your App

Get a token with:

pages_read_engagement

leads_retrieval

pages_manage_metadata

Select a Page, then click Generate Token

Save this token securely

6. Subscribe Page to App (Webhook)

Use the access token and run this cURL command: bash
CopyEdit
curl -X POST "https://graph.facebook.com/v18.0/{PAGE_ID}/subscribed_apps" \ -d "subscribed_fields=leadgen" \ -d "access_token=PAGE_ACCESS_TOKEN"

Replace:

{PAGE_ID} → your Facebook Page ID

PAGE_ACCESS_TOKEN → token you just generated

7. Test the Setup

Go to Meta for Developers > Tools > Lead Ads Testing Tool
🔗 https://developers.facebook.com/tools/lead-ads-testing

Choose your Page & Form

Click "Create Lead"

Check:

Your webhook.php gets hit (check fb_leads_log.json)

Log file shows lead data or lead ID

✅ Files Recap

PHP File: webhook.php (handles GET verify + POST leads)

Live URL: Must be HTTPS and publicly accessible

FB App Setup: Webhooks → Page → Callback + Verify Token

Page Subscription: Done via Graph API

Permissions: leads_retrieval, etc.

HTML Entity Encoder / Decoder

2025-07-07T15:10:00.003+05:30

🔹 What is it?
An HTML Entity Encoder/Decoder converts special characters in your text (like £, ©, 🎓, ✓, <, >, ", ') to their HTML-safe versions and vice versa.

🔹 Why use it?
✅ Prevents encoding issues (like ?? in emails or web pages)

✅ Ensures symbols display correctly across all devices/email clients

✅ Protects HTML content from breaking (especially when sending through PHPMailer or storing in databases)

Online Link: https://codepen.io/Web-Offers/pen/ogXKMbM

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HTML Entity Encoder/Decoder</title>
<style>
body { font-family: Arial, sans-serif; padding: 20px; max-width: 600px; margin: auto; }
textarea { width: 100%; height: 100px; margin-bottom: 10px; }
button { padding: 10px 15px; margin-right: 10px; }
label { font-weight: bold; }
</style>
</head>
<body>
<h2>HTML Entity Encoder / Decoder</h2>

<label for="inputText">Input:</label>
<textarea id="inputText"></textarea>

<div>
<button onclick="encodeHTML()">Encode</button>
<button onclick="decodeHTML()">Decode</button>
</div>

<label for="outputText">Output:</label>
<textarea id="outputText" readonly></textarea>

<script>
function encodeHTML() {
const input = document.getElementById("inputText").value;
const encoded = input.replace(/[\u00A0-\u9999<>\&]/gim, function(i) {
return '&#'+i.charCodeAt(0)+';';
});
document.getElementById("outputText").value = encoded;
}

function decodeHTML() {
const input = document.getElementById("inputText").value;
const textarea = document.createElement("textarea");
textarea.innerHTML = input;
document.getElementById("outputText").value = textarea.value;
}
</script>
</body>
</html>

Collection of jQuery Input Filters

2025-06-26T19:20:00.002+05:30

✅ Collection of jQuery Input Filters

1. Allow Only Numeric

javascript
$('.allow-numeric').on('input', function () {
    this.value = this.value.replace(/[^0-9]/g, '');
});

2. Allow Only Alphabets (a-z, A-Z) and Spaces

javascript
$('.allow-alpha-space').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z\s]/g, '');
});

3. Allow Only Alphanumeric and Spaces

javascript
$('.allow-alnum-space').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z0-9\s]/g, '');
});

4. Allow Decimal Numbers (e.g., 123.45)

javascript
$('.allow-decimal').on('input', function () {
    this.value = this.value.replace(/[^0-9.]/g, '').replace(/(\..*)\./g, '$1');
});

5. Allow Alphabets Only (No Space)

javascript
$('.allow-alpha').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z]/g, '');
});

6. Allow Alphanumeric (No Space)

javascript
$('.allow-alnum').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z0-9]/g, '');
});

7. Allow Username Style (Alphanumeric, Underscore, No Space)

javascript
$('.allow-username').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z0-9_]/g, '');
});

8. Allow Name Format (Alphabets, Space, Dot)

javascript
$('.allow-name').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z.\s]/g, '');
});

9. Allow Phone Number Format (Digits, Space, Plus, Hyphen)

javascript
$('.allow-phone').on('input', function () {
    this.value = this.value.replace(/[^0-9+\-\s]/g, '');
});

10. Allow Address Format (Alphanumeric, Comma, Dot, Hyphen, Space)

javascript
$('.allow-address').on('input', function () {
    this.value = this.value.replace(/[^a-zA-Z0-9,\.\-\s]/g, '');
});

✅ Example Usage in HTML:

html
<input type="text" class="allow-numeric" placeholder="Only Numbers">
<input type="text" class="allow-alpha-space" placeholder="Alphabets with Space">
<input type="text" class="allow-alnum-space" placeholder="Alphanumeric with Space">
<input type="text" class="allow-decimal" placeholder="Decimal">
<input type="text" class="allow-phone" placeholder="Phone Number">
<input type="text" class="allow-address" placeholder="Address">

Use This Excel Function to Slugify / Handle-ize Any Text — Useful for Bulk URL Creation

2025-06-16T22:42:00.002+05:30

Periodically I run into the issue where I need to create a lot (thousands) of URLs from random strings of text, which may or may not include capital letters, spaces, hyphens, brackets, commas, etc.

Sometimes this is easiest done in a spreadsheet, so here’s an Excel function I baked up a couple years ago that I use to solve the particular problem of slugifying/handle-izing those URLs. It’s clunky, but functional*. Just replace “A2” with whatever cell you need to slugify, and voila.

*Only works for ASCII characters. Does not check for collisions!

Example

AS dsf a s1111#$ b'lue p"urple AsdoIj

becomes

as-dsf-a-s1111-blue-purple-asdoij

The Function

=LOWER(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(TRIM(A2)," ","-"),"'",""),"""",""),"/",""),"?",""),".",""),">",""),"<",""),",",""),";",""),":",""),"[",""),"]",""),"}",""),"[",""),"{",""),"|",""),"\",""),"+",""),"=",""),"~",""),"`",""),"!",""),"@",""),"#",""),"$",""),"%",""),"^",""),"&",""),"*",""),"(",""),")",""),"#",""),"'",""),"""",""),"---","-"),"--","-"))

USA States List As A PHP Array

2025-06-11T13:37:00.004+05:30

$state_list = array(
'Alabama',
'Alaska',
'Arizona',
'Arkansas',
'California',
'Colorado',
'Connecticut',
'Delaware',
'District Of Columbia',
'Florida',
'Georgia',
'Hawaii',
'Idaho',
'Illinois',
'Indiana',
'Iowa',
'Kansas',
'Kentucky',
'Louisiana',
'Maine',
'Maryland',
'Massachusetts',
'Michigan',
'Minnesota',
'Mississippi',
'Missouri',
'Montana',
'Nebraska',
'Nevada',
'New Hampshire',
'New Jersey',
'New Mexico',
'New York',
'North Carolina',
'North Dakota',
'Ohio',
'Oklahoma',
'Oregon',
'Pennsylvania',
'Rhode Island',
'South Carolina',
'South Dakota',
'Tennessee',
'Texas',
'Utah',
'Vermont',
'Virginia',
'Washington',
'West Virginia',
'Wisconsin',
'Wyoming',
);

$state_list = array(
'AL'=>"Alabama",
'AK'=>"Alaska",
'AZ'=>"Arizona",
'AR'=>"Arkansas",
'CA'=>"California",
'CO'=>"Colorado",
'CT'=>"Connecticut",
'DE'=>"Delaware",
'DC'=>"District Of Columbia",
'FL'=>"Florida",
'GA'=>"Georgia",
'HI'=>"Hawaii",
'ID'=>"Idaho",
'IL'=>"Illinois",
'IN'=>"Indiana",
'IA'=>"Iowa",
'KS'=>"Kansas",
'KY'=>"Kentucky",
'LA'=>"Louisiana",
'ME'=>"Maine",
'MD'=>"Maryland",
'MA'=>"Massachusetts",
'MI'=>"Michigan",
'MN'=>"Minnesota",
'MS'=>"Mississippi",
'MO'=>"Missouri",
'MT'=>"Montana",
'NE'=>"Nebraska",
'NV'=>"Nevada",
'NH'=>"New Hampshire",
'NJ'=>"New Jersey",
'NM'=>"New Mexico",
'NY'=>"New York",
'NC'=>"North Carolina",
'ND'=>"North Dakota",
'OH'=>"Ohio",
'OK'=>"Oklahoma",
'OR'=>"Oregon",
'PA'=>"Pennsylvania",
'RI'=>"Rhode Island",
'SC'=>"South Carolina",
'SD'=>"South Dakota",
'TN'=>"Tennessee",
'TX'=>"Texas",
'UT'=>"Utah",
'VT'=>"Vermont",
'VA'=>"Virginia",
'WA'=>"Washington",
'WV'=>"West Virginia",
'WI'=>"Wisconsin",
'WY'=>"Wyoming"
);

Export Data to Excel using MySQLi (Procedural)

2025-04-14T18:56:00.004+05:30

<?php
// Database connection (Procedural MySQLi)

$conn = mysqli_connect("localhost", "username", "password", "database_name");

// Check connection
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

// Query to fetch data (adjust as needed)
$query = "SELECT * FROM users"; // Change this query as needed
$result = mysqli_query($conn, $query);

// Set headers to trigger Excel file download
header("Content-Type: application/vnd.ms-excel");
header("Content-Disposition: attachment; filename=export.xls");
header("Pragma: no-cache");
header("Expires: 0");

// Start outputting the table in HTML format (Excel will interpret it as an Excel file)
echo "<table border='1'>";

// Get the column names dynamically
$fields = mysqli_fetch_fields($result);

// Print the table headers
echo "<tr>";
foreach ($fields as $field) {
    echo "<th>" . htmlspecialchars($field->name) . "</th>";
}
echo "</tr>";

// Fetch and output the rows
while ($row = mysqli_fetch_assoc($result)) {
    echo "<tr>";
    foreach ($row as $cell) {
        echo "<td>" . htmlspecialchars($cell) . "</td>";
    }
    echo "</tr>";
}

// Close the table
echo "</table>";

// Free result and close the connection
mysqli_free_result($result);
mysqli_close($conn);
?>

Counting Distinct Values Across Multiple Columns MySQL

2025-04-09T13:27:00.005+05:30

In some scenarios, we may need to count distinct values based on more complex conditions that can’t be easily handled with just the WHERE clause.

SQL’s CASE statement allows us to apply conditional logic within our queries, enabling us to create more dynamic counts based on specific criteria.

Let’s say we want to count how many distinct courses are active and how many are inactive. We can use CASE to handle this logic:

SELECT
    COUNT(DISTINCT CASE WHEN is_active = 'TRUE' THEN id END) AS active_courses,
    COUNT(DISTINCT CASE WHEN is_active = 'FALSE' THEN id END) AS inactive_courses
FROM
    Course;

OR

SELECT
    COUNT(DISTINCT CASE WHEN status = 'active' THEN userid END) AS active_users
FROM
    your_table;

Google Autocomplete without API Key

2025-02-20T13:01:00.003+05:30

PHP (getAutocomplete.php)

<?php
header("Content-Type: application/json");

// Ensure a query parameter is provided
if (isset($_GET['q']) && !empty($_GET['q'])) {
    $query = urlencode($_GET['q']);
    // Google suggestion endpoint
    $url = "http://suggestqueries.google.com/complete/search?client=firefox&q={$query}";

    // Fetch suggestions from Google
    $response = file_get_contents($url);
    if ($response !== false) {
        echo $response;
    } else {
        echo json_encode(["error" => "Unable to fetch suggestions"]);
    }
} else {
    echo json_encode(["error" => "No query provided"]);
}
?>

HTML & JavaScript

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Google Autocomplete without API Key</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<style>
    #suggestions {
      border: 1px solid #ccc;
      max-width: 300px;
      margin-top: 5px;
    }
    .suggestion-item {
      padding: 5px;
      cursor: pointer;
    }
    .suggestion-item:hover {
      background-color: #f0f0f0;
    }
</style>
</head>
<body>

<input type="text" id="autocomplete" placeholder="Type to search..." style="width: 300px; padding: 10px;">
<div id="suggestions"></div>

<script>
    $(document).ready(function() {
      $('#autocomplete').on('input', function() {
        let query = $(this).val();

        // Clear suggestions if query is empty
        if (!query) {
          $('#suggestions').empty();
          return;
        }

        // Call PHP proxy to get suggestions
        $.ajax({
          url: 'getAutocomplete.php',
          data: { q: query },
          dataType: 'json',
          success: function(data) {
            // The response is an array where the second element holds the suggestions
            let suggestions = data[1];
            let suggestionHtml = "";
            suggestions.forEach(function(item) {
              suggestionHtml += `<div class="suggestion-item">${item}</div>`;
            });
            $('#suggestions').html(suggestionHtml);
          },
          error: function() {
            $('#suggestions').html("<div class='suggestion-item'>Error fetching suggestions</div>");
          }
        });
      });

      // Optionally handle suggestion click
      $(document).on('click', '.suggestion-item', function() {
        $('#autocomplete').val($(this).text());
        $('#suggestions').empty();
      });
    });
</script>

</body>
</html>

How It Works

    PHP Proxy (getAutocomplete.php):
        Accepts a query string (q) from the client.
        Forwards the query to Google's suggestion endpoint.
        Returns the JSON response to the client.

    HTML & JavaScript:
        The input field listens for user input.
        On every input change, an AJAX request is made to the PHP proxy.
        Suggestions from Google are extracted (the second element of the returned JSON array) and displayed.
        Clicking on a suggestion fills the input field with that value.

Key documents required for student visa applications to the UK, USA, Australia, and Canada

2025-01-17T17:07:00.007+05:30

More detailed comparison of the key documents required for student visa applications to the UK, USA, Australia, and Canada, breaking down some additional requirements and differences that might be relevant.

Comparison of Key Documents (Expanded)

Document	UK (Tier 4 Student Visa)	USA (F-1 Student Visa)	Australia (Subclass 500 Student Visa)	Canada (Study Permit)
Valid Passport	Yes	Yes	Yes	Yes
Visa Application Form	Online Application (Visa4UK)	DS-160 Form (Online Application)	Subclass 500 Application (Online)	Online Application (Study Permit)
Visa Application Fee	Yes (depends on course length)	Yes (varies by nationality)	Yes (varies by nationality)	Yes
Proof of Financial Support	Bank statements, scholarship letters, financial guarantee letters	Bank statements, affidavits of support, scholarship letters	Bank statements, proof of scholarship, sponsor letters	Bank statements, affidavits of support, scholarship letters
English Language Proficiency	IELTS, TOEFL, or equivalent	TOEFL, IELTS, or other approved tests	IELTS, TOEFL, PTE Academic or equivalent	IELTS, TOEFL, or equivalent
Confirmation of Acceptance for Study (CAS/I-20/CoE)	CAS (Confirmation of Acceptance for Studies) from a UK university	Form I-20 (issued by U.S. school)	CoE (Confirmation of Enrollment) from an Australian institution	Letter of Acceptance from a Designated Learning Institution (DLI)
Proof of Academic Qualifications	Transcripts, diplomas, certificates	Transcripts, diplomas, certificates, test scores (e.g., SAT, GRE, TOEFL)	Transcripts, diplomas, certificates	Transcripts, diplomas, certificates, test scores (e.g., IELTS, TOEFL)
Passport-Sized Photographs	2 passport-sized photos (UK specifications)	2 passport-sized photos (U.S. specifications)	Passport-sized photo (Australian specifications)	2 passport-sized photos (Canadian specifications)
Immigration Health Surcharge (IHS)	Yes (for the duration of the course)	Not required (but health insurance may be necessary depending on the institution)	Yes (required for international students)	Not required, but health insurance may be needed
Police Certificate	If required by your home country	If required by U.S. consulate	If required (based on nationality or course)	If required by the consulate or visa office
Biometric Information (Fingerprint/Photo)	No	Yes (fingerprints and photo)	No	Yes (fingerprints and photo, if required)
Tuberculosis (TB) Test	If required (depends on nationality)	If required by specific U.S. consulate	If required (depends on nationality)	If required by specific consulates
Genuine Temporary Entrant (GTE) Statement	No	No	Yes (you must show intent to return home after studies)	No (but you need to show intent to study and return)
Medical Exam	If required (for certain courses or nationalities)	If requested by consulate	If requested (specific countries or high-risk health regions)	If required by consulate
Parental Consent	Yes (for applicants under 18 years old)	No (unless under 18 in the USA)	Yes (if under 18)	Yes (if under 18)
Letter of Intent/Statement of Purpose	Yes (optional but may be required)	Yes (a personal statement is required)	No (but you may be asked to submit a statement)	Yes (explaining why you want to study in Canada)
Affidavit of Support	Optional, if someone is sponsoring your education	Required if you have a financial sponsor	Required if someone is sponsoring you	Required if someone is sponsoring you
Travel History	Optional but may be considered	May be required to show previous travel or visas	Optional, but can help demonstrate strong ties to home country	Can be considered, especially if you have traveled to certain countries

Additional Document Requirements Based on Country-Specific Factors:

UK (Tier 4):
- Parental Consent: If you are under 18, the UK requires parental consent along with details of your living arrangements in the UK.
- TB Test: If you are applying from a country where tuberculosis is common, you will need a TB test certificate.
- Financial Evidence: You must provide evidence that you have sufficient funds to cover your tuition and living expenses. This can be bank statements, a letter from a financial sponsor, or a scholarship.
USA (F-1):
- Visa Interview: Most applicants will need to attend an in-person interview at a U.S. Embassy or Consulate.
- Travel History: You may be asked to provide previous travel documents, especially if you have traveled to other countries before. It helps in establishing your ties to your home country.
- Genuine Intention: The U.S. student visa process requires you to prove that you are a "genuine student" and that you intend to return to your home country after completing your studies.
Australia (Subclass 500):
- GTE Statement: The Genuine Temporary Entrant (GTE) requirement ensures that you are genuinely coming to Australia temporarily for study purposes and not for other reasons.
- Health Insurance: Overseas Student Health Cover (OSHC) is mandatory for international students in Australia, which will cover your health needs during your studies.
Canada (Study Permit):
- Letter of Intent: A Statement of Purpose (SOP) is often required by Canadian immigration to explain why you have chosen to study in Canada and how your studies fit into your long-term career goals.
- Medical Exam: In some cases, applicants may be required to undergo a medical exam, especially if applying from countries with higher health risks.
- Proof of Ties to Home Country: You will need to demonstrate that you have strong ties to your home country and will return once your studies are complete. This could include a letter from an employer, proof of family ties, etc.

Sending email php class with PHPMailer

2024-12-18T12:40:00.004+05:30

In PHP, the file needs to be added

require_once('class.smtp.php');

require_once('class.phpmailer.php');

After this, it's just code:

require_once('class.smtp.php');
require_once('class.phpmailer.php');

//----------------------------------------------
// Send an e-mail. Returns true if successful
//
//   $to - destination
//   $nameto - destination name
//   $subject - e-mail subject
//   $message - HTML e-mail body
//   altmess - text alternative for HTML.
//----------------------------------------------

function sendmail($to,$nameto,$subject,$message,$altmess) {

$from = "yourcontact@yourdomain.com";
$namefrom = "yourname";
$mail = new PHPMailer();
$mail->CharSet = 'UTF-8';
$mail->isSMTP();   // by SMTP
$mail->SMTPAuth   = true;   // user and password
$mail->Host       = "localhost";
$mail->Port       = 25;
$mail->Username   = $from;
$mail->Password   = "yourpassword";
$mail->SMTPSecure = "";    // options: 'ssl', 'tls' , ''
$mail->setFrom($from,$namefrom);   // From (origin)
$mail->addCC($from,$namefrom);      // There is also addBCC
$mail->Subject = $subject;
$mail->AltBody = $altmess;
$mail->Body = $message;
$mail->isHTML();   // Set HTML type
//$mail->addAttachment("attachment");
$mail->addAddress($to, $nameto);
return $mail->send();
}

Sending email with attachment and Sending HTML email

2024-11-22T16:01:00.006+05:30

<?php
######## Sending email with attachment ########

function sendMail(
    string $fileAttachment,
    string $mailMessage,
    string $subject,
    array $toAddress,
    array $ccAddress,
    array $bccAddress,
    string $fromMail
){
    $to        = implode(",", $toAddress);
    $cc        = implode(",", $ccAddress);
    $bcc       = implode(",", $bccAddress);

    $fileAttachment = trim($fileAttachment);
    $from           = $fromMail;
    $pathInfo       = pathinfo($fileAttachment);
    $attchmentName = "attachment_".date("YmdHms").(
        (isset($pathInfo['extension']))? ".".$pathInfo['extension'] : ""
    );

    $attachment    = chunk_split(base64_encode(file_get_contents($fileAttachment)));
    $boundary      = "PHP-mixed-".md5(time());
    $boundWithPre = "--".$boundary;

    $headers[] = "From: $from";
    $headers[] = "Cc: $cc";
    $headers[] = "Bcc: $bcc";

    $headers[] = "Reply-To: $from";
    $headers[] = "Content-Type: multipart/mixed; boundary=\"".$boundary."\"";

    $message[] = $boundWithPre;
    $message[] = "Content-Type: text/plain; charset=UTF-8";
    $message[] = "$mailMessage";

    $message[] = $boundWithPre;
    $message[] = "Content-Type: application/octet-stream; name=\"".$attchmentName."\"";
    $message[] = "Content-Transfer-Encoding: base64";
    $message[] = "Content-Disposition: attachment";
    $message[] = $attachment;
    $message[] = $boundWithPre."--";

    return mail($to, $subject, implode("\r\n", $message), implode("\r\n", $headers));
}

########## Sending email in html

function sendHtmlMail(
    string $subject,
    string $fromMail
    array $toAddress,
    array $ccAddress,
    array $bccAddress,
    string $mailMessage
){

    $to        = implode(",", $toAddress);
    $cc        = implode(",", $ccAddress);
    $bcc       = implode(",", $bccAddress);
    $headers[] = 'MIME-Version: 1.0';
    $headers[] = 'Content-type: text/html; charset=iso-8859-1';
    $headers[] = 'To: '.$to;
    $headers[] = 'From: '.$fromMail;
    $headers[] = 'Cc: '.$cc;
    $headers[] = 'Bcc: '.$bcc;

    return mail($to, $subject, $mailMessage, implode("\r\n", $headers));
}
?>

MySQL Incorrect integer value

2024-10-15T18:14:00.002+05:30

specify list a column list and omit your auto_incremented column from it as njk suggested. That would be the best approach. See comments.
explicitly assign NULL
explicitly assign 0

No value was specified for the AUTO_INCREMENT column, so MySQL assigned sequence numbers automatically. You can also explicitly assign NULL or 0 to the column to generate sequence numbers.

When using mysqli server, you can fix it by typing

**** set global sql_mode=''

Try to edit your my.cf and comment the original sql_mode and add sql_mode = "".

vi /etc/mysql/my.cnf

sql_mode = ""

save and quit...

service mysql restart

Link to show Google reviews and Add Google review

2024-09-23T16:05:00.005+05:30

https://search.google.com/local/reviews?placeid= is accurate; you can also search for your business on Google; hit the read reviews link and when the JavaScript modal pops up with the reviews copy the URL; for example:

Link 1: Add review

https://search.google.com/local/writereview?placeid=ChIJ1ZtTFPaRyzsRRufT85_UU48

Link 2: View and add review

https://search.google.com/local/reviews?placeid=ChIJ1ZtTFPaRyzsRRufT85_UU48

Find the ID of a particular place:
https://developers.google.com/maps/documentation/places/web-service/place-id

Delete All Files from Folder using PHP

2024-09-22T16:35:00.003+05:30

PHP code is provided for three situations. In these situations, you should need to delete all files functionality in your web project.

Delete All Files from Folder:
The following script removes all files from the folder.

$files = glob('my_folder/*'); //get all file names
foreach($files as $file){
if(is_file($file))
unlink($file); //delete file
}

Delete All Files of Specific Type Recursively from Folder:
The following script removes only those files which have a specific extension.

$files = glob('my_folder/*.jpg'); //get all file names
foreach($files as $file){
if(is_file($file))
unlink($file); //delete file
}

Delete Old Files from Folder:
The following script removes the files which modified before the specified time.

$files = glob('my_folder/*'); //get all file names
foreach($files as $file){
    $lastModifiedTime = filemtime($file);
    $currentTime = time();
    $timeDiff = abs($currentTime - $lastModifiedTime)/(60*60); //in hours
    if(is_file($file) && $timeDiff > 10) //check if file is modified before 10 hours
    unlink($file); //delete file
}

Complete List of HTML Meta Tags for Website

2024-08-24T12:22:00.001+05:30

Basic HTML Meta Tags

<meta charset='UTF-8'>
<meta name='keywords' content='your, tags'>
<meta name='description' content='150 words'>
<meta name='subject' content='your website's subject'>
<meta name='copyright' content='company name'>
<meta name='language' content='ES'>
<meta name='robots' content='index,follow'>
<meta name='revised' content='Sunday, July 18th, 2010, 5:15 pm'>
<meta name='abstract' content=''>
<meta name='topic' content=''>
<meta name='summary' content=''>
<meta name='Classification' content='Business'>
<meta name='author' content='name, email@hotmail.com'>
<meta name='designer' content=''>
<meta name='reply-to' content='email@hotmail.com'>
<meta name='owner' content=''>
<meta name='url' content='http://www.websiteaddrress.com'>
<meta name='identifier-URL' content='http://www.websiteaddress.com'>
<meta name='directory' content='submission'>
<meta name='pagename' content='jQuery Tools, Tutorials and Resources - O'Reilly Media'>
<meta name='category' content=''>
<meta name='coverage' content='Worldwide'>
<meta name='distribution' content='Global'>
<meta name='rating' content='General'>
<meta name='revisit-after' content='7 days'>
<meta name='subtitle' content='This is my subtitle'>
<meta name='target' content='all'>
<meta name='HandheldFriendly' content='True'>
<meta name='MobileOptimized' content='320'>
<meta name='date' content='Sep. 27, 2010'>
<meta name='search_date' content='2010-09-27'>
<meta name='DC.title' content='Unstoppable Robot Ninja'>
<meta name='ResourceLoaderDynamicStyles' content=''>
<meta name='medium' content='blog'>
<meta name='syndication-source' content='https://mashable.com/2008/12/24/free-brand-monitoring-tools/'>
<meta name='original-source' content='https://mashable.com/2008/12/24/free-brand-monitoring-tools/'>
<meta name='verify-v1' content='dV1r/ZJJdDEI++fKJ6iDEl6o+TMNtSu0kv18ONeqM0I='>
<meta name='y_key' content='1e39c508e0d87750'>
<meta name='pageKey' content='guest-home'>
<meta itemprop='name' content='jQTouch'>
<meta http-equiv='Expires' content='0'>
<meta http-equiv='Pragma' content='no-cache'>
<meta http-equiv='Cache-Control' content='no-cache'>
<meta http-equiv='imagetoolbar' content='no'>
<meta http-equiv='x-dns-prefetch-control' content='off'>

OpenGraph Meta Tags

<meta name='og:title' content='The Rock'>
<meta name='og:type' content='movie'>
<meta name='og:url' content='http://www.imdb.com/title/tt0117500/'>
<meta name='og:image' content='http://ia.media-imdb.com/rock.jpg'>
<meta name='og:site_name' content='IMDb'>
<meta name='og:description' content='A group of U.S. Marines, under command of...'>

<meta name='fb:page_id' content='43929265776'>
<meta name='application-name' content='foursquare'>
<meta name='og:email' content='me@example.com'>
<meta name='og:phone_number' content='650-123-4567'>
<meta name='og:fax_number' content='+1-415-123-4567'>

<meta name='og:latitude' content='37.416343'>
<meta name='og:longitude' content='-122.153013'>
<meta name='og:street-address' content='1601 S California Ave'>
<meta name='og:locality' content='Palo Alto'>
<meta name='og:region' content='CA'>
<meta name='og:postal-code' content='94304'>
<meta name='og:country-name' content='USA'>

<meta property='fb:admins' content='987654321'>
<meta property='og:type' content='game.achievement'>
<meta property='og:points' content='POINTS_FOR_ACHIEVEMENT'>

<meta property='og:video' content='http://example.com/awesome.swf'>
<meta property='og:video:height' content='640'>
<meta property='og:video:width' content='385'>
<meta property='og:video:type' content='application/x-shockwave-flash'>
<meta property='og:video' content='http://example.com/html5.mp4'>
<meta property='og:video:type' content='video/mp4'>
<meta property='og:video' content='http://example.com/fallback.vid'>
<meta property='og:video:type' content='text/html'>

<meta property='og:audio' content='http://example.com/amazing.mp3'>
<meta property='og:audio:title' content='Amazing Song'>
<meta property='og:audio:artist' content='Amazing Band'>
<meta property='og:audio:album' content='Amazing Album'>
<meta property='og:audio:type' content='application/mp3'>

Create Custom Meta Tags

Use custom meta tags to store data that you need in Javascript, instead of hard-coding that data into your Javascript. I store my Google Analytics code in meta tags. Here's some examples:

<meta name='google-analytics' content='1-AHFKALJ'>
<meta name='disqus' content='abcdefg'>
<meta name='uservoice' content='asdfasdf'>
<meta name='mixpanel' content='asdfasdf'>

Company/Service Meta Tags

ClaimID

<meta name='microid' content='mailto+http:sha1:e6058ed7fca4a1921cq91d7f1f3b8736cd3cc1g7'>
<meta name='readability-verification' content='E7aEHvVQpWc8VHDqKvaB2Z58hek2EAv2HuLuegv7'>
<meta name='google-site-verification' content='4SMIedO1X4IkYrYuhEC2VuovdQM36Xxb0btUjElqQyg'>
<meta name='ICBM' content='40.746990, -73.980537'>
<meta name='generator' content='WordPress 3.3.1'>
<meta name='norton-safeweb-site-verification' content='tz8iotmk-pkhui406y41y5bfmfxdwmaa4a-yc0hm6r0fga7s6j0j27qmgqkmc7oovihzghbzhbdjk-uiyrz438nxsjdbj3fggwgl8oq2nf4ko8gi7j4z7t78kegbidl4'>

Apple Meta Tags

<meta name="apple-mobile-web-app-title" content="My App"> <!-- New in iOS6 -->
<meta name='apple-mobile-web-app-capable' content='yes'>
<meta name='apple-touch-fullscreen' content='yes'>
<meta name='apple-mobile-web-app-status-bar-style' content='black'>
<meta name='format-detection' content='telephone=no'>
<meta name='viewport' content='width=device-width; content='width = 320; initial-scale=1.0; maximum-scale=1.0; user-scalable=yes; target-densitydpi=160dpi'>

<link href='/apple-touch-icon.png' rel='apple-touch-icon' type='image/png'>
<link href='touch-icon-ipad.png' rel='apple-touch-icon' sizes='72x72'>
<link href='touch-icon-iphone4.png' rel='apple-touch-icon' sizes='114x114'>
<link href='/startup.png' rel='apple-touch-startup-image'>

<link href='http://github.com/images/touch-icon-iphone4.png' sizes='114x114' rel='apple-touch-icon-precomposed'>
<link href='http://github.com/images/touch-icon-ipad.png' sizes='72x72' rel='apple-touch-icon-precomposed'>
<link href='http://github.com/images/apple-touch-icon-57x57.png' sizes='57x57' rel='apple-touch-icon-precomposed'>

Internet Explorer Meta Tags

<meta http-equiv='Page-Enter' content='RevealTrans(Duration=2.0,Transition=2)'>
<meta http-equiv='Page-Exit' content='RevealTrans(Duration=3.0,Transition=12)'>
<meta name='mssmarttagspreventparsing' content='true'>
<meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"/>
<meta name='msapplication-starturl' content='http://blog.reybango.com/about/'>
<meta name='msapplication-window' content='width=800;height=600'>
<meta name='msapplication-navbutton-color' content='red'>
<meta name='application-name' content='Rey Bango Front-end Developer'>
<meta name='msapplication-tooltip' content='Launch Rey Bango's Blog'>
<meta name='msapplication-task' content='name=About;action-uri=/about/;icon-uri=/images/about.ico'>
<meta name='msapplication-task' content='name=The Big List;action-uri=/the-big-list-of-javascript-css-and-html-development-tools-libraries-projects-and-books/;icon-uri=/images/list_links.ico'>
<meta name='msapplication-task' content='name=jQuery Posts;action-uri=/category/jquery/;icon-uri=/images/jquery.ico'>
<meta name='msapplication-task' content='name=Start Developing;action-uri=/category/javascript/;icon-uri=/images/script.ico'>
<meta name='msvalidate.01' content='6E3AD52DC176461A3C81DD6E98003BC9'>
<meta http-equiv='cleartype' content='on'>

Google Meta Tags

<meta name="news_keywords" content="World Cup, Brazil 2014, Spain vs Netherlands, soccer, football">

TweetMeme Meta Tags

<meta name='tweetmeme-title' content='Retweet Button Explained'>

Blog Catalog Meta Tags

<meta name='blogcatalog'>

Rails Meta Tags

<meta name='csrf-param' content='authenticity_token'>
<meta name='csrf-token' content='/bZVwvomkAnwAI1Qd37lFeewvpOIiackk9121fFwWwc='>

HTML Link Tags

<link rel='alternate' type='application/rss+xml' title='RSS' href='http://feeds.feedburner.com/martini'>
<link rel='alternate' type='application/atom+xml' title='Atom 0.3' href='https://example.com/feed.atom'>
<link rel='shortcut icon' type='image/ico' href='/favicon.ico'>
<link rel='fluid-icon' type='image/png' href='/fluid-icon.png'>
<link rel='me' type='text/html' href='http://google.com/profiles/thenextweb'>
<link rel='shortlink' href='http://blog.unto.net/?p=353'>
<link rel='archives' title='May 2003' href='http://blog.unto.net/2003/05/'>
<link rel='index' title='DeWitt Clinton' href='http://blog.unto.net/'>
<link rel='start' title='Pattern Recognition 1' href='http://blog.unto.net/photos/pattern_recognition_1_about/'>
<link rel='bookmark'title='Styleguide' href='http://paulrobertlloyd.com/about/styleguide/'>
<link rel='search' href='/search.xml' type='application/opensearchdescription+xml' title='Viatropos'>

<link rel='self' type='application/atom+xml' href='http://www.syfyportal.com/atomFeed.php?page=3'>
<link rel='first' href='http://www.syfyportal.com/atomFeed.php'>
<link rel='next' href='http://www.syfyportal.com/atomFeed.php?page=4'>
<link rel='previous' href='http://www.syfyportal.com/atomFeed.php?page=2'>
<link rel='last' href='http://www.syfyportal.com/atomFeed.php?page=147'>

<link rel='canonical' href='http://smallbiztrends.com/2010/06/9-things-to-do-before-entering-social-media.html'>
<link rel='EditURI' type='application/rsd+xml' title='RSD' href='http://smallbiztrends.com/xmlrpc.php?rsd'>
<link rel='pingback' href='http://smallbiztrends.com/xmlrpc.php'>
<link rel='stylesheet' media='only screen and (max-device-width: 480px)' href='http://wordpress.org/style/iphone.css' type='text/css'>
<link rel='wlwmanifest' href='http://www.example.com/wp-includes/wlwmanifest.xml' type='application/wlwmanifest+xml'>

## Other Resources

- [HTML5 Boilerplate explanations and suggestions of header tags](http://html5boilerplate.com/docs/head-Tips/)
- [Dublic Core Meta Tags](http://www.seoconsultants.com/meta-tags/dublin/)
- [Apple Meta Tags](http://developer.apple.com/safari/library/documentation/appleapplications/reference/safarihtmlref/articles/metatags.html)
- [OpenGraph Meta Tags](http://opengraphprotocol.org/)
- [Link Tag Meaning](http://intertwingly.net/wiki/pie/LinkTagMeaning)
- [Google Chrome HTML5 Tags](http://www.html5rocks.com/)

How to Remove Special Characters from String in PHP

2024-07-25T23:15:00.003+05:30

The special characters from string can be easily removed using preg_replace() function in PHP. The preg_replace() function performs a search with the regular expression and replaces the matches with specified replacement. In the following code snippet, we will show you how to remove special characters from string using PHP.

The following example code uses preg_replace() with the Regular Expressions to remove special characters from the string in PHP.

Remove Special Characters from String

The following code removes the special characters from string with regular expression pattern (Regex) in PHP.

$string = "Wel%come *to( codex<world, the |world o^f pro?gramm&ing.";

// Remove special characters
$cleanStr = preg_replace('/[^A-Za-z0-9]/', '', $string);

Output:

Welcometocodexworldtheworldofprogramming

Remove Special Characters from String Except Space

The following code removes the special characters from string except space in PHP.

// Remove special characters except space
$cleanStr = preg_replace('/[^A-Za-z0-9 ]/', '', $string);

Output:

Welcome to codexworld the world of programming

Clean String for SEO Friendly URL

The following code cleans a string that can be used in the URI segment in PHP for generating SEO friendly URL.

function cleanStr($string){
    // Replaces all spaces with hyphens.
    $string = str_replace(' ', '-', $string);

    // Removes special chars.
    $string = preg_replace('/[^A-Za-z0-9\-]/', '', $string);
    // Replaces multiple hyphens with single one.
    $string = preg_replace('/-+/', '-', $string);

    return $string;
}

$cleanStr = cleanStr($string);

Output:

Welcome-to-codexworld-the-world-of-programming

PHP | Send Attachment With Email

2024-07-12T14:37:00.004+05:30

<?php

if(isset($_POST['button']) && isset($_FILES['attachment']))
{
    $from_email         = 'sender@abc.com'; //from mail, sender email address
    $recipient_email = 'recipient@xyz.com'; //recipient email address

    //Load POST data from HTML form
    $sender_name = $_POST["sender_name"]; //sender name
    $reply_to_email = $_POST["sender_email"]; //sender email, it will be used in "reply-to" header
    $subject     = $_POST["subject"]; //subject for the email
    $message     = $_POST["message"]; //body of the email

    /*Always remember to validate the form fields like this
    if(strlen($sender_name)<1)
    {
        die('Name is too short or empty!');
    }
    */
    //Get uploaded file data using $_FILES array
    $tmp_name = $_FILES['attachment']['tmp_name']; // get the temporary file name of the file on the server
    $name     = $_FILES['attachment']['name']; // get the name of the file
    $size     = $_FILES['attachment']['size']; // get size of the file for size validation
    $type     = $_FILES['attachment']['type']; // get type of the file
    $error     = $_FILES['attachment']['error']; // get the error (if any)

    //validate form field for attaching the file
    if($error > 0)
    {
        die('Upload error or No files uploaded');
    }

    //read from the uploaded file & base64_encode content
    $handle = fopen($tmp_name, "r"); // set the file handle only for reading the file
    $content = fread($handle, $size); // reading the file
    fclose($handle);                 // close upon completion

    $encoded_content = chunk_split(base64_encode($content));
    $boundary = md5("random"); // define boundary with a md5 hashed value

    //header
    $headers = "MIME-Version: 1.0\r\n"; // Defining the MIME version
    $headers .= "From:".$from_email."\r\n"; // Sender Email
    $headers .= "Reply-To: ".$reply_to_email."\r\n"; // Email address to reach back
    $headers .= "Content-Type: multipart/mixed;"; // Defining Content-Type
    $headers .= "boundary = $boundary\r\n"; //Defining the Boundary

    //plain text
    $body = "--$boundary\r\n";
    $body .= "Content-Type: text/plain; charset=ISO-8859-1\r\n";
    $body .= "Content-Transfer-Encoding: base64\r\n\r\n";
    $body .= chunk_split(base64_encode($message));

    //attachment
    $body .= "--$boundary\r\n";
    $body .="Content-Type: $type; name=".$name."\r\n";
    $body .="Content-Disposition: attachment; filename=".$name."\r\n";
    $body .="Content-Transfer-Encoding: base64\r\n";
    $body .="X-Attachment-Id: ".rand(1000, 99999)."\r\n\r\n";
    $body .= $encoded_content; // Attaching the encoded file with email

    $sentMailResult = mail($recipient_email, $subject, $body, $headers);

    if($sentMailResult ){
        echo "<h3>File Sent Successfully.<h3>";
        // unlink($name); // delete the file after attachment sent.
    }
    else{
        die("Sorry but the email could not be sent.
                    Please go back and try again!");
    }
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/css/bootstrap.min.css">
    <title>Send Attachment With Email</title>
</head>
<body>
    <div style="display:flex; justify-content: center; margin-top:10%;">
        <form enctype="multipart/form-data" method="POST" action="" style="width: 500px;">
            <div class="form-group">
                <input class="form-control" type="text" name="sender_name" placeholder="Your Name" required/>
            </div>
            <div class="form-group">
                <input class="form-control" type="email" name="sender_email" placeholder="Recipient's Email Address" required/>
            </div>
            <div class="form-group">
                <input class="form-control" type="text" name="subject" placeholder="Subject"/>
            </div>
            <div class="form-group">
                <textarea class="form-control" name="message" placeholder="Message"></textarea>
            </div>
            <div class="form-group">
                <input class="form-control" type="file" name="attachment" placeholder="Attachment" required/>
            </div>
            <div class="form-group">
                <input class="btn btn-primary" type="submit" name="button" value="Submit" />
            </div>
        </form>
    </div>
</body>
</html>

How to change date format to dd/mm/yyyy in html input

2024-01-30T23:17:00.005+05:30

PHP MySQL Insert Query that won't insert if already exists

2023-12-29T17:24:00.002+05:30

Solution 1:

Create a distinctive index for the (user, label, empid) . As a result, the database will prohibit the creation of any duplicate entries.

ALTER TABLE pms_users
ADD UNIQUE INDEX (user, label, empid);

Solution 2:

ALTER TABLE pms_users ADD CONSTRAINT pms_users_unq UNIQUE (`user`, `label`, `agent`);

INSERT IGNORE INTO `pms_users`
(`user`, `label`, `agent`, `empid`)
VALUES ('some_user', 'some_label', 'some_agent', 123)

Data encryption in PHP using base64 with key

2023-11-07T21:47:00.004+05:30

I am using base64 for encryption and decryption.

encrypt.php

<?php
$id= $_GET['id'];
$encrypted = encrypt($id, "check");
echo $encrypted ;

function encrypt($string, $key){
   $result = '';
   for($i=0; $i<strlen($string); $i++) {
     $char = substr($string, $i, 1);
     $keychar = substr($key, ($i % strlen($key))-1, 1);
     $char = chr(ord($char)+ord($keychar));
     $result.=$char;
   }
   return base64_encode($result);
}
?>

decrypt.php

<?php
$id= $_GET['id'];
$decrypted = decrypt($id, "check");
echo $decrypted ;

function decrypt($string, $key) {
   $result = '';
   $string = base64_decode($string);
   for($i=0; $i<strlen($string); $i++) {
      $char = substr($string, $i, 1);
      $keychar = substr($key, ($i % strlen($key))-1, 1);
      $char = chr(ord($char)-ord($keychar));
      $result.=$char;
   }
   return $result;
}
?>

HTML text input allow only numeric input

2023-10-30T20:53:00.003+05:30

Here is a simple one which allows for exactly one decimal, but no more. The input event uses regex to replace text on the fly based on the two patterns:

Remove anything that's not a digit or a dot
Remove any second instance of a dot

As someone commented below, the solution above does not handle leading zeros. If your particular use case requires that these are not allowed you can add to the pattern above like so:

That will allow 0.123 or .123 but not 0123 or 00.123.

Amazon Business Bounty Program

2023-10-12T15:08:00.011+05:30

Amazon Prime is a single membership with many benefits for Amazon customers where members can get the best of Shopping and Entertainment with FREE fast shipping, unlimited streaming of movies, TV shows and music, exclusive shopping deals and selection, ad-free music and more.

Amazon Business Bounty Program

Amazon.in Great Indian Festival - See All Deals & Offers

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Email to link with email parameter opens outlook in browser starts new email

2023-09-14T14:18:00.002+05:30

mailto: works for all users if they have set up default application outlook locally.

<a href="mailto:example@outlook.com">Send Email</a>

https://outlook.office.com/owa/?path=/mail/action/compose&to=emailname@domain.com&subject=Email%20Subject%20Here&body=some+content+goes+here

Link to compose outlook email:

https://outlook.office.com/owa/?path=/mail/action/compose

Pass parameters in URL based on your use case:

&to=emailname@domain.com
&subject=Email%20Subject%20Here
&body=some+content+goes+here