Gaurav Rai

What is difference between MEAN stack developer and FULL stack developer?

2019-05-11T01:13:00.003-07:00

Full-Stack Developer is simply someone who is familiar with all layers in Software Development. These developers are not experts at every layer of development.

Full-Stack Developers just have a functional knowledge and ability to take a concept and turn it into a finished product.

To become a Full-Stack Web Developer you need to start learning following things,

1. HTML/CSS
2. JavaScript
3. Databases & Web Storage
4. Back-End Language
5. Web Application Architecture
6. Basic Algorithms & Data Structures
7. Git
8. HTTP & REST

MEAN is an acronym for MongoDB, ExpressJS, AngularJS and Node.js. From client to server to database, MEAN is full stack JavaScript.

A MEAN stack developer is someone who is has knowledge in some particular areas alone.

To become MEAN Stack Developer you should first learn the basics of javascript and node.js.

MEAN is comprise of following four technologies,

Node.js is a server side JavaScript execution environment.

Express is lightweight framework used to build web applications in Node.

MongoDB is a schemaless NoSQL database system.

AngularJS is a JavaScript framework developed by Google.

Reference URL:- https://www.quora.com/What-is-difference-between-MEAN-stack-developer-and-FULL-stack-developer

Key explanations of computer keyboard

2016-05-23T01:01:00.001-07:00

Windows	PC keyboards have a Windows key that looks like a four-pane window
Command	Apple Mac computers have a command key.
Menu	PC keyboards also have a Menu key that looks like an cursor pointing to a menu.
Esc	Esc (Escape) key
F1 - F12	Information about the F1 through F12 keyboard keys.
F13 - F24	Information about the F13 through F24 keyboard keys.
Tab	Tab key
Caps lock	Caps lock key
Shift	Shift key
Ctrl	Ctrl (Control) key
Fn	Fn (Function) key
Alt	Alt (Alternate) key (PC Only; Mac users have Option key)
Spacebar	Spacebar key
Arrows	Up, Down, Left, Right Arrow keys
Back Space	Back space (or Backspace) key
Delete	Delete or Del key
Enter	Enter key
Prt Scrn	Print screen key
Scroll lock	Scroll lock key
Pause	Pause key
Break	Break key
Insert	Insert key
Home	Home key
Page up	Page up or pg up key
Page down	Page down or pg dn key
End	End key
Num Lock	Num Lock key
~	Tilde
`	Acute, Back quote, grave, grave accent, left quote, open quote, or a push
!	Exclamation mark, Exclamation point, or Bang
@	Ampersat, Arobase, Asperand, At, or At symbol
#	Octothorpe, Number, Pound, sharp, or Hash
£	Pounds Sterling or Pound symbol
€	Euro
$	Dollar sign or generic currency
¢	Cent sign
¥	Chinese/Japenese Yuan
§	Micro or Section
%	Percent
°	Degree
^	Caret or Circumflex
&	Ampersand, Epershand, or And
*	Asterisk and sometimes referred to as star.
(	Open parenthesis
)	Close parenthesis
-	Hyphen, Minus or Dash
_	Underscore
+	Plus
=	Equal
{	Open Brace, squiggly brackets, or curly bracket
}	Close Brace, squiggly brackets, or curly bracket
[	Open bracket
]	Closed bracket
\|	Pipe, Or, or Vertical bar
\	Backslash or Reverse Solidus
/	Forward slash, Solidus, Virgule, or Whack
:	Colon
;	Semicolon
"	Quote, Quotation mark, or Inverted commas
'	Apostrophe or Single Quote
<	Less Than or Angle brackets
>	Greater Than or Angle brackets
,	Comma
.	Period, dot or Full Stop
?	Question Mark

How to sum two numbers in AngularJS

2015-07-09T02:15:00.001-07:00

Example

Following example will showcase use of controller.

test.html

<html>
<head>
<title>How to sum two numbers in AngularJS</title>
</head>
<body>
<h2>How to sum two numbers in AngularJS</h2>
<div ng-app="mathApp" ng-controller="addController">
Enter first number: <input type="text" ng-model="student.firstNumber"><br><br>
Enter second number: <input type="text" ng-model="student.secondNumber"><br>
<br>
You are entering: {{student.fullName()}}
</div>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<script>
var mathApp = angular.module("mathApp", []);
mathApp.controller('addController', function($scope) {
   $scope.student = {
      firstNumber: "10",
      secondNumber: "20",
      fullName: function() {
         var studentObject;
         studentObject = $scope.student;
         return parseInt(studentObject.firstNumber)+parseInt(studentObject.secondNumber);
      }
   };
});
</script>
</body>
</html>

Output

Open text.html in a web browser. See the result.

Administration,Admin,Superadmin with Cake 3 - Prefix

2015-05-07T12:14:00.002-07:00

In cakephp 3.X change routing concept, Configure::write('Routing.prefixes', array('admin')); If u want to use it, Please make a admin folder inside ur controller folder and write a same name controller name in this folder. If u want to admin_index() function like 2.X then u write only index () function in admin folder controller .

Please u note one things, in ur router.php u add this code

Router::prefix('admin', function ($routes) {

//My route

$routes->fallbacks('InflectedRoute');

});

Free Projects | Get Free Computer Science Projects

2015-04-03T11:46:00.002-07:00

FreeProjectz.com is a student support web portal for the IT and management to complete their Graduate, Post Graduate Level projects. We do not execute projects where in the students does not reflect a basic understanding of topic and is not willing to work with us in completion of the project The expert team of FreeProjectz provides necessary assistance for BTECH, BCA, MCA, MSc (IT), PGDCA, MTECH (IT&CS) students with the projects of your choice and ensuring that every student gets the desired attention with intellect support Expert and Project Synopsis & Project Services are also available.

Download IGNOU, SMU Sample, Template, Last Year, Previous Year, Final Year / Semester project files for MCA (Master of Computer Application), BCA (Bachelor of Computer Application), BSc. (Bachelor of Science), BE (Bachelor of Engineer), BTech (Bachelor of Technologies), BSC-CS (Bachelor of Computer Science), BSC-IT (Bachelor of Science in Information Technology), DIT (Diploma In Information Technology), BCom IS (Bachelor of Commerce in Information System), PGDCA (Post Graduate Diploma in Computer Application), MSc. CS (Master of Science in Computer Science), MCom IS (Master of Commerce in Information System), MBA IT ( Master of Business Administration Information Technology), BIT, ADIT, ME, MTech, MBA IT/System, Diploma, Polytechnic Engineering , Computer Science college student of Indian university.FreeProjectz.com is a student support web portal for the IT and management to complete their Graduate, Post Graduate Level projects. We do not execute projects where in the students does not reflect a basic understanding of topic and is not willing to work with us in completion of the project The expert team of FreeProjectz provides necessary assistance for BTECH, BCA, MCA, MSc (IT), PGDCA, MTECH (IT&CS) students with the projects of your choice and ensuring that every student gets the desired attention with intellect support Expert and Project Synopsis & Project Services are also available.

Get domain name from full URL

2015-02-26T09:23:00.000-08:00

<?php

function getdomainname($url)
{
$pieces = parse_url($url);
$domain = isset($pieces['host']) ? $pieces['host'] : '';
if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $regs)) {
return $regs['domain'];
}
return false;
}

print getdomainname("http://gauravraimca.blogspot.com/feeds/posts/default?alt=rss"); // outputs 'blogspot.com'

?>

Google Maps - converting address to latitude & longitude

2014-12-07T05:02:00.002-08:00

<?php

* Given an address, return the longitude and latitude using The Google Geocoding API V3

function Get_LatLng_From_Google_Maps($address) {

$url = "http://maps.googleapis.com/maps/api/geocode/json?address=$address&sensor=false";

// Make the HTTP request

$data = @file_get_contents($url);

// Parse the json response

$jsondata = json_decode($data,true);

// If the json data is invalid, return empty array

if (!check_status($jsondata)) return array();

$LatLng = array(

'lat' => $jsondata["results"][0]["geometry"]["location"]["lat"],

'lng' => $jsondata["results"][0]["geometry"]["location"]["lng"],

);

return $LatLng;

}

* Check if the json data from Google Geo is valid

function check_status($jsondata) {

if ($jsondata["status"] == "OK") return true;

return false;

}

Redirecting non-www to www with .htaccess

2014-11-01T23:00:00.003-07:00

If you want to redirect all non-www requests to your site to the www version, all you need to do is add the following code to your .htaccess file:

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.

RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

Can't import database through phpmyadmin file size too large

2014-10-10T11:51:00.003-07:00

For Upload large size data in using phpmyadmin Do following steps.

Open php.ini file from

OS -> Location

windows(With Xampp Installation) -> /xampp/php/php.in

Mac OSX -> /private/etc/php.ini

Linux -> /etc/php.ini

-> /usr/bin/php5/bin/php.ini

-> /etc/php/php.ini

-> /etc/php5/apache2/php.ini

Update following lines

max_execution_time = 259200

max_input_time = 259200

memory_limit = 1000M

upload_max_filesize = 750M

post_max_size = 750M

than after restart xampp server or restart all services Now Upload data using import function in phymyadmin. Apply second step if till not upload data.

Include a JavaScript file in a JavaScript file

2014-09-27T23:19:00.005-07:00

function includeJS(incFile)
{
document.write('<script type="text/javascript" src="'+ incFile+ '"></script>');
}

includeJS('filename.js');

Add this Setting the URL & Title to Share

2014-09-13T09:59:00.000-07:00

http://support.addthis.com/customer/portal/articles/125634-setting-the-url-to-share

Convert utf8-characters and back in PHP

2014-09-13T09:51:00.001-07:00

Set meta tag in head as

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />

use the link http://www.i18nqa.com/debug/utf8-debug.html to replace the symbols character you want.

then use str_replace like
<?php
$content='Kinsa â€“ Worldâ€™s Smartest Thermometer';
$find = array('â€œ', 'â€™', 'â€¦', 'â€”', 'â€“', 'â€˜', 'Ã©', 'Â', 'â€¢', 'Ëœ', 'â€'); // en dash
$replace = array('“', '’', '…', '—', '–', '‘', 'é', '', '•', '˜', '”');
echo $content = str_replace($find, $replace, $content);
output Kinsa – World’s Smartest Thermometer
?>

Get Facebook Likes Count of a page using Graph API

2014-07-19T21:25:00.000-07:00

<?php
echo facebooklike('209414452444193');

function facebooklike($page_id){

$likes = 0; //Initialize the count
//Construct a Facebook URL
$json_url ='https://graph.facebook.com/'.$page_id.'';
$json = get_contents($json_url);
$json_output = json_decode($json);

//Extract the likes count from the JSON object
if($json_output->likes){
$likes = $json_output->likes;
}
return $likes;

}

function get_contents($url)
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}

?>

Google OAuth 2 authorization - Error: redirect_uri_mismatch

2014-06-15T08:31:00.000-07:00

Go to the console for your project and look under API Access. You should see your client ID & secret there, along with a list of redirect URIs. If the URI you want isn't listed, click edit settings and add the URI to the list.
https://console.developers.google.com

Reload the current document

2014-05-25T01:54:00.002-07:00

location.reload(Optional);

Optional. Specifies the type of reloading:
false - Default. Reloads the current page from the cache.
true - The current page must be reloaded from the server

Set selected option of select box

2014-05-20T08:20:00.004-07:00

$(function() {
$("#demo").val('hello');
});

How to show particular image as thumbnail while implementing share on Facebook?

2014-05-20T04:19:00.001-07:00

Closing Colorbox

2014-05-12T10:45:00.001-07:00

jQuery('#cboxClose').click();

or

$(window).colorbox.close();

or

$.fn.colorbox.close();

If you do need to get the base url in Cake, you can use the Router class

2014-04-26T22:51:00.003-07:00

//with http://site.com/my_app

echo Router::url('/') //-> /my_app

echo Router::url('/', true) //-> http://site.com/my_app

Import GMail Contacts Google OAuth Connect with PHP

2013-08-31T22:31:00.002-07:00

This post explains you how to import Gmail contacts from address book via Google open authorization protocol connect with PHP. It’s simple just few configurations follow below four steps, use this script and give option to invite more friends.

Step 1

Add or register your domain at click here.

Step 2

Verify your domain ownership with HTML file upload or including META tag.

Step 3

Google will provide you OAuth consumer key and OAuth consumer secret key.

Step 4
Config.php
You have to change Oauth keys and return URL.

<?php
$consumer_key=''demo.com';
$consumer_secret='EO2lVXZ3MEeqmv3xxfA_rM1u';
$callback='http://demo.com/gmail/Contacts.php';
$emails_count='500'; // max-results
?>

GmailConnect.php
Contains PHP code. Connecting to Google for requesting open authentication access tokens.

<?php
include_once 'GmailOath.php';
include_once 'Config.php';
session_start();
$oauth =new GmailOath($consumer_key, $consumer_secret, $argarray, $debug, $callback);
$getcontact=new GmailGetContacts();
$access_token=$getcontact->get_request_token($oauth, false, true, true);
$_SESSION['oauth_token']=$access_token['oauth_token'];
$_SESSION['oauth_token_secret']=$access_token['oauth_token_secret'];
?>

<a href="https://www.google.com/accounts/OAuthAuthorizeToken?oauth_token=<?php echo $oauth->rfc3986_decode($access_token['oauth_token']) ?>">
<img src='Googleconnect.png'/>
</a>

Contacts.php
Google return to Contact.php file with contacts data.

<?php
include_once 'GmailOath.php';
include_once 'Config.php';
session_start();
$oauth =new GmailOath($consumer_key, $consumer_secret, $argarray, $debug, $callback);
$getcontact_access=new GmailGetContacts();
$request_token=$oauth->rfc3986_decode($_GET['oauth_token']);
$request_token_secret=$oauth->rfc3986_decode($_SESSION['oauth_token_secret']);
$oauth_verifier= $oauth->rfc3986_decode($_GET['oauth_verifier']);
$contact_access = $getcontact_access->get_access_token($oauth,$request_token, $request_token_secret,$oauth_verifier, false, true, true);
$access_token=$oauth->rfc3986_decode($contact_access['oauth_token']);
$access_token_secret=$oauth->rfc3986_decode($contact_access['oauth_token_secret']);
$contacts= $getcontact_access->GetContacts($oauth, $access_token, $access_token_secret, false, true,$emails_count);

//Email Contacts
foreach($contacts as $k => $a)
{
   $final = end($contacts[$k]);
   foreach($final as $email)
    {
       echo $email["address"] ."<br />";
    }
}?>

CakePHP 2.3.6 released

2013-06-11T10:16:00.000-07:00

The CakePHP core team is proud to announce the immediate availability of CakePHP 2.3.6[1]. 2.3.6 is a bugfix release for the 2.3 release branch. Since the release of 2.3.5 there have been 64 commits and 17 tickets resolved. A short list of the changes you can expect is:

Datetime comparisons in CakeTime are more accurate now.
FormHelper now correctly marks fields with error classes on forms that save multiple records.
Controller::$modelClass is now set before components are initialized.
The file reading features of CakeEmail are now available outside the class.
Email line wrapping compatibility with japanese messages has been improved.
HtmlHelper::tag() now returns the content when $tag is false.
Mocked components are now enabled when using ControllerTestCase::testAction().
The type attribute can now be set when using HtmlHelper::script() and HtmlHelper::scriptBlock().
Passing an empty array does not reset SmtpTransport's configuration anymore.
Xml parse errors with SimpleXmlElement now throw XmlException.
FormHelper now disables options in multi-select elements now.
TranslateBehavior now always uses $name instead of alias when updating/inserting rows.
Cookie expiry times in the distant future now work on 32bit systems.
FileEngine now clears groups with differing prefixes correctly.

Security Fix: CakePHP 2.3.5 released

2013-06-11T10:13:00.001-07:00

CakePHP 2.3.5 has just been released to fix a critical issue with how the webroot property in CakeRequest is handled that could potentially lead to XSS attacks on certain pages. In the following days we will offer a full description of the vulnerability and how it can be exploited, after some reasonable time has passed for our users to upgrade.
A huge thanks to Florian Krämer for conducting a full security audit on the CakePHP code and Carl Sutton for report and providing a candidate patch.
In addition to the security fix 2.3.4 contains fixes for the following issues:

Increasing compatibility with old CentOS servers and the way they handle PHP regular expressions
Preventing pagiation limit from overflowing the max integer value
Making sure form ids generated in FormHelper::postLink() are actually unique
Fixed a bug in TextHelper auto link utility

We recommend all users of 2.x release series upgrade as soon as possible to the new release.

Responsive web design

2013-05-19T09:41:00.000-07:00

Responsive design is an approach to web page creation that makes use of flexible layouts, flexible images and cascading style sheet media queries. The goal of responsive design is to build web pages that detect the visitor’s screen size and orientation and change the layout accordingly.

Introduction to SQL - SQL LESSON 1

2012-07-16T17:55:00.001-07:00

Php Interview Questions and Answers

2012-04-10T10:15:00.004-07:00

1 How can we know that a session is started or not?

Ans=A session starts by session_start() function.
This session_start() is always declared in header portion. it always declares first. then we write session_register().

2 What are the differences between mysql_fetch_array(), mysql_fetch_object(), mysql_fetch_row()?

Ans= Answer 1:

mysql_fetch_array() -> Fetch a result row as a combination of associative array and regular array.
mysql_fetch_object() -> Fetch a result row as an object. mysql_fetch_row() -> Fetch a result set as a regular array().
Answer 2:
The difference between mysql_fetch_row() and mysql_fetch_array() is that the first returns the results in a numeric array ($row[0], $row[1], etc.), while the latter returns a the results an array containing both numeric and associative keys ($row['name'], $row['email'], etc.). mysql_fetch_object() returns an object ($row->name, $row->email, etc.).

3 if we login more than one browser windows at the same time with same user and after that we close one window, then is the session is exist to other windows or not? And if yes then why? If no then why?

Ans=Session depends on browser. If browser is closed then session is lost. The session data will be deleted after session time out. If connection is lost and you recreate connection, then session will continue in the browser.

4 Who is the father of PHP ?
Ans= Rasmus Lerdorf is known as the father of PHP.

5 What is the difference between $name and $$name?
Ans=$name is variable where as $$name is reference variable
like $name=sonia and $$name=singh so $sonia value is singh.

6 How can we submit a form without a submit button?

Ans=Java script submit() function is used for submit form without submit button

on click call document.formname.submit()

7 In how many ways we can retrieve the data in the result set of

MySQL using PHP?

Ans=We can do it by 4 Ways

1. mysql_fetch_row. , 2. mysql_fetch_array , 3. mysql_fetch_object
4. mysql_fetch_assoc

8 What are the differences between Get and post methods.

Ans=There are some defference between GET and POST method

1. GET Method have some limit like only 2Kb data able to send for request
But in POST method unlimited data can we send
2. when we use GET method requested data show in url but
Not in POST method so POST method is good for send sensetive request

9 How can we extract string "pcds.co.in " from a string "http://info@pcds.co.in

using regular expression of PHP?

Ans=preg_match("/^http:\/\/.+@(.+)$/","http://info@pcds.co.in",$matches);

echo $matches[1];

10 How can we create a database using PHP and MySQL?

Ans=We can create MySQL database with the use of

mysql_create_db("Database Name");

11 What are the differences between require and include?

Ans=Both include and require used to include a file but when included file not found

Include send Warning where as Require send Fatal Error .

12 Can we use include ("xyz.PHP") two times in a PHP page "index.PHP"?

Ans= Yes we can use include("xyz.php") more than one time in any page. but it create a prob when xyz.php file contain some funtions declaration then error will come for already declared function in this file else not a prob like if you want to show same content two time in page then must incude it two time not a prob