PHP Simple QA

Best wordpress theme developer india

2018-04-15T00:32:00.000-07:00

Jose TVM
email:dscomtvm@gmail.com
phone:91-9847443143
http://www.indiawordpressdeveloper.com

Specialties:
php,HTML, JavaScript, Ajax, Joomla,wordpress,jquery,seo,elgg,magento,php zend,oscommerce and codeigniter.

theme basic config

2017-07-13T05:31:00.003-07:00

<?php
if ( ! isset( $content_width ) ) {
$content_width = 660;
}

/**
* Twenty Fifteen only works in WordPress 4.1 or later.
*/
if ( version_compare( $GLOBALS['wp_version'], '4.1-alpha', '<' ) ) {

}

if ( ! function_exists( 'test_setup' ) ) :
/**
* Sets up theme defaults and registers support for various WordPress features.
*
* Note that this function is hooked into the after_setup_theme hook, which
* runs before the init hook. The init hook is too late for some features, such
* as indicating support for post thumbnails.
*
* @since Twenty Fifteen 1.0
*/
function test_setup() {

add_theme_support( 'post-thumbnails' );
add_theme_support( 'post-thumbnails', array( 'post' ) ); // Posts only
add_theme_support( 'post-thumbnails', array( 'page' ) ); // Pages only
add_theme_support( 'post-thumbnails', array( 'post', 'movie' ) ); // Posts and Movies

add_theme_support( 'html5', array(
'search-form', 'comment-form', 'comment-list', 'gallery', 'caption'
) );

/*
* Enable support for Post Formats.
*
* See: https://codex.wordpress.org/Post_Formats
*/
add_theme_support( 'post-formats', array(
'aside', 'image', 'video', 'quote', 'link', 'gallery', 'status', 'audio', 'chat'
) );

/*
* Enable support for custom logo.
*
* @since Twenty Fifteen 1.5
*/
add_theme_support( 'custom-logo', array(
'height' => 248,
'width' => 248,
'flex-height' => true,
) );

}
endif;
add_action( 'after_setup_theme', 'test_setup' );

function register_my_menu() {
register_nav_menu('header-menu',__( 'Header Menu' ));
}
add_action( 'init', 'register_my_menu' );
function arphabet_widgets_init() {

register_sidebar( array(
'name' => 'Home right sidebar',
'id' => 'home_right_1',
'before_widget' => '<div>',
'after_widget' => '</div>',
'before_title' => '<h2 class="rounded">',
'after_title' => '</h2>',
) );

}
add_action( 'widgets_init', 'arphabet_widgets_init' );

function add_scripts() {
wp_enqueue_script(
'custom_script',
get_template_directory_uri() . '/js/jquery-2.1.1.js',
array('jquery'),null
);
wp_enqueue_script(
'script',
get_template_directory_uri() . '/js/script.js',
array('jquery'),null
);
}
function add_style() {
wp_enqueue_style( 'wpse-styles1', get_template_directory_uri() . '/css/zerogrid.css', array(), null );
wp_enqueue_style( 'wpse-styles2', get_template_directory_uri() . '/css/menu.css', array(), null );
wp_enqueue_style( 'wpse-styles3', get_template_directory_uri() . '/css/style.css', array(), null );
wp_enqueue_style( 'wpse-styles4', get_template_directory_uri() . '/font-awesome/css/font-awesome.min.css', array(), null );
wp_enqueue_style('wp_font5',get_template_directory_uri().'/owl-carousel/owl.carousel.css',array(),null);
wp_enqueue_style('wp_font6',get_template_directory_uri().'/owl-carousel/owl.theme.css',array(),null);

}
add_action( 'wp_enqueue_scripts', 'add_scripts' );
add_action( 'wp_enqueue_scripts', 'add_style' );
?>

Wordpress Basic Setup

2017-07-13T04:52:00.000-07:00

<?php
/*
Plugin Name: Test Plugin
Plugin URI: https://developer.wordpress.org/plugins/the-basics/
Description: Basic WordPress Plugin Header Comment
Version: 20160911
Author: WordPress.org
Author URI: https://developer.wordpress.org/
License: GPL2
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: wporg
Domain Path: /languages
*/

define( 'TEST_VERSION', '3.2' );
define( 'TEST__MINIMUM_WP_VERSION', '3.7' );
define( 'TEST__PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'TEST_DELETE_LIMIT', 100000 );

function wporg_custom_post_type()
{
register_post_type('product',
[
'labels' => [
'name' => __('Products'),
'singular_name' => __('Product'),
],
'public' => true,
'has_archive' => true,
'rewrite' => ['slug' => 'products'], // my custom slug
]
);
}
add_action('init', 'wporg_custom_post_type');

function pluginprefix_install()
{
// trigger our function that registers the custom post type
wporg_custom_post_type();

// clear the permalinks after the post type has been registered
flush_rewrite_rules();
}
register_activation_hook( __FILE__, 'pluginprefix_install' );

function pluginprefix_deactivation()
{
// our post type will be automatically removed, so no need to unregister it

// clear the permalinks to remove our post type's rules
flush_rewrite_rules();
}
register_deactivation_hook( __FILE__, 'pluginprefix_deactivation' );

function product_meta_box(){
add_meta_box('raidco-sku-meta-box',
'test',
'test',
'product',
'normal',
'high');
}

add_action('add_meta_boxes','product_meta_box');

function test(){
global $wpdb;
global $post;
wp_nonce_field(__FILE__,'form_csrf');
$test= get_post_meta( $post->ID,'test',true );
?>
<div class="wrap">
<input name="test" class="raidco-controls" style="width:36%" id="test" value="<?php echo $test; ?>" data-validation="test" placeholder="">
<?php
$url =get_post_meta($post->ID,'my-image-for-post', true); ?>
<input id="my_image_URL" name="my_image_URL" type="hidden" value="<?php echo $url;?>" style="width:400px;" />
<input id="my_upl_button" type="button" value="Upload Image" /><br/><img src="<?php echo $url;?>" style="width:200px;" id="picsrc" />
</div>

<script>
jQuery(document).ready( function( $ ) {
jQuery('#my_upl_button').click(function() {

window.send_to_editor = function(html) {
imgurl = jQuery(html).attr('src')
jQuery('#my_image_URL').val(imgurl);
jQuery('#picsrc').attr("src",imgurl);
tb_remove();
}

formfield = jQuery('#my_image_URL').attr('name');
tb_show( '', 'media-upload.php?type=image&TB_iframe=true' );
return false;
});

});
</script>
<?php
}
function save_product($post_id){
global $post;
update_post_meta( $post->ID,'test',$_POST['test']);
if (isset($_POST['my_image_URL'])){
update_post_meta($post_id, 'my-image-for-post',$_POST['my_image_URL']);
}
}

add_action('save_post','save_product');

// product Shortcode
function product_shortcode()
{
$args = array(
'post_type' => 'product',
'post_status' => 'publish'
);

$string = '';
$query = new WP_Query( $args );
if( $query->have_posts() ){
$string .= '<ul>';
while( $query->have_posts() ){
$query->the_post();
$string .= '<li>' . get_the_title() . '</li>';
$string.='<li>'.the_content().'</li>';
}
$string .= '</ul>';
}
wp_reset_postdata();
return $string;

}

add_shortcode('product', 'product_shortcode');

//single plugin template

add_filter('single_template', 'my_custom_template');

function my_custom_template($single) {
global $wp_query, $post;

/* Checks for single template by post type */
if ($post->post_type == "product"){
if ( is_single() ) {
require(TEST__PLUGIN_DIR . 'test1.php' );
}

}
}

//image custom

function my_admin_scripts() {
wp_enqueue_script('media-upload');
wp_enqueue_script('thickbox');
wp_register_script('my-upload', TEST_PLUGIN_URL.'/my-script.js', array('jquery','media-upload','thickbox'));
wp_enqueue_script('my-upload');
}

function my_admin_styles() {

wp_enqueue_style('thickbox');
}

// better use get_current_screen(); or the global $current_screen
if (isset($_GET['page']) && $_GET['page'] == 'my_plugin_page') {

add_action('admin_print_scripts', 'my_admin_scripts');
add_action('admin_print_styles', 'my_admin_styles');
}

button onclick event example javascript

2017-03-29T00:22:00.001-07:00

Here is the example of button click Example javascipt

<button onclick="myFun()">Click me</button>

<p id="demo"></p>
<script>
function myFun()
{
document.getElementById("demo").innerHTML="Test";
}
</script>

Javascript function

2017-03-28T23:52:00.002-07:00

A JavaScript function is a block of code designed to perform a particular task.

A JavaScript function is executed when "something" calls it

Here is Example Of javascript function

function myfun(p,p1)

{

return p * p1;

}

document.getElementById("test").innerHTML=myfun(4,1);

</script>

Javascript Objects

2017-03-28T23:21:00.001-07:00

JavaScript objects are written with curly braces.Object properties are written as name:value pairs, separated by commas.

Here is Example of object

<p id=""></p>
<script>
var per={name:"bipin",sex:"male",age:"20"}

document.getelementById("test").innerHTML=per.name +""+ per.sex+"";

</script>

javascript array

2017-03-28T23:12:00.003-07:00

Javascript array declare in square brackets and array ithem are seperated by commas

Here is Example of array in javascript

<p id="test"> </p>

<script>
var car=["honda","maruti","tata"];
getElementById("test").innerHTML=car[0];

</script>

0utput will get honda..

How can add value to variable

2017-03-28T22:57:00.001-07:00

we can use += operater to add a value to varable

For example

<p id="test"> </p>

<script>

var a;

a=10;
a+=10;

document.getElementById("test").innerHTML=a;

</srcipt>

How can concatenate String in javascript

2017-03-28T22:29:00.004-07:00

+ operator used for concatenate string in Javascript

We can also use += operator for concatenate string

Example like

var a,b,c;
a="test";
b="test1";
c= a+ " " + b;

what is Value = undefined in javascript

2017-03-28T22:18:00.001-07:00

a variable declare a value not defind that is called undefind

For Example
<p id="test">
<script>
Var a;

document.getElementById("test").innerHTML=a;

</script>

Javascript Comment

2017-03-28T22:12:00.001-07:00

There are two type comment in javascipt

one is single line comment

other one is multi line comment

How Can Assigning value in javascript

2017-03-28T22:03:00.003-07:00

How Can Assigning value in javascript

We can assign value in javascript in = sign

Here is the Example of code

<p id="test"></p>

<script>
var a,b
a=10;
b=10
document.getElementById("test").innerHML=a+b;
</script>

Output will be 20 ...

Simple Example of Javascript

2017-03-23T23:05:00.002-07:00

<!DOCTYPE html>
<html>
<body>

<h1>Simple Example of javascript</h1>

<p id="demo">Test</p>

<button type="button" onclick='document.getElementById("demo").innerHTML = "Hello JavaScript!"'>Click Me!</button>

</body>
</html>

it will display out

Simple Example of javascript

Hello JavaScript!

What is javascript

2017-03-23T23:01:00.000-07:00

JavaScript is programming language of html and Web. JavaScript is dynamic and high level and interpreted programming language also it easy to study for learners

How can create a plugin in elgg

2014-07-02T21:53:00.000-07:00

I would like to share some basics about plugin development in elgg .

In elgg all the plugins will be in mod directory. You can drop your plugin in this directory.

First you need a name for your plugin.The names of the plugins in an installation must be unique.

you need a ‘start.php’ file for each plugin which to describe the common functions for a plugin.This file can be considered as the core controller of all plugins .The start.php must have an init function which initializes the plugin .

You have to register this function to elgg system and have to make sure the initialisation function is called on initialisation.

The following is a sample if the init functuion is yourplugin_init()

register_elgg_event_handler('init','system',’yourplugin _init');

In common the elgg plugin will have following folders

actions : Commonly all action(normally form actions) files are saved in this folder.

And you can register all the actions involved in a plugin with in its start.php file

The function is as follows .

register_action($action, $public = false, $filename = "", $admin_only = false)

For example

register_action('blog/add',false,$CONFIG->pluginspath . "blog/actions/add.php");

the parameters of the register_action indicates

action : The name of the action (here "blog/add")

second parameter is a Boolean parameter.which indicates whether the action is public or not that is whether this action be accessed by people not logged into the system or not.In above example false indicates that it is not a public action.

Next is filename that is where the action is located here the action is located in blog/actions/add.php , $CONFIG->pluginspath gives the path to plugin s that is the full path to mod directory of your elgg installation .

And if it is required you can register the action as admin action .you have to set the fourth parameter as true for this by default it in false.

Views : In common all html files will be in this folder .You can call these views in the plugin using the function

elgg_view(‘viewname’,$array_of params)

You can override existing views also.The view lodes based on the plugin priority.

You can extend views using the function extend_view('original view ','your view');

The view folder contains a default folder which holds all the views of plugin .For the easiness .For the easiness you can use subfolders in the default folder.

For example if you have a plugin named blog and it have a view called create.php in the path views /defaults/blogs/create.php you can call this view like ‘blogs/create ‘ .That is you can call the view as follows elgg_view(‘blogs/create’)

Language file :

This file contains the language translations for the plugin.

Creating Friendly URLS:

You can create nice URLs for your plugin using page handler function.for doing this you have to define and register a page handler in `start.php`,

function handlerfunction($page) {

switch ($page[0])

{

case 'index':

Your code for the index view

break;

case 'your_view':

include(‘yourview’);

break;

}

}

register_page_handler(handler, 'handler_function’);

in this function the first argument handler is your entity type, the next argument is the your plugin function handling the request which will get passed as an array in `$page` this carries each url segments. You can check for a location and can create the cases corresponding to that.

User settings:

Plugins might have some settings , You can create the view in the file settings.phpand you can retrieve the settings by the following function

get_plugin_setting($name, $plugin_name );

and you can set values using

set_plugin_setting($name, $value, $plugin_name);function

You can create widgets on your plugins .The widget might be in the folder views/default/widgets

The widgets folder may have two files one is view.php that is view of widget and the other is eidt.php that is the page for setting the widget display options like number of items to be displayed etc.

You can initialize the widget in the init function using the following function

add_widget_type('widgettitle',$name_of_widget,$desc_of_widget) .

simple explode program in php

2014-06-26T04:04:00.001-07:00

<?php
//explode string into array
$str=" Test Explode function in php ";
print_r (explode(" ",$str));

?>

it will be Output like:

Array ( [0] => [1] => Test [2] => Explode [3] => function [4] => in [5] => php [6] => )

simple example php function

2014-06-26T02:02:00.002-07:00

<?php
//simple example php function
function welcome()
{
echo "Welcome to Function";
}
welcome();
?>

how can create notepad file in php

2014-06-26T01:43:00.001-07:00

<?php
//how can create notepad file in php
$t= fopen("testfiles.txt", "w") or die("Unable to open file!");
$txt = "John Doe\n";
fwrite($t, $txt);
$txt = "Jane Doe\n";
fwrite($t, $txt);
fclose($t);

?>

common type of errors in php

2014-06-25T02:40:00.001-07:00

1) Warning
2) Notice
3) Fatal

simple uploading script in php

2014-06-24T23:41:00.003-07:00

<?php
//simple uploading script in php
//echo "Upload: " . $_FILES["file"]["name"] . "<br>";
echo "File Name ".$_FILES["file"]["name"] . "<br>";
echo "File Type ".$_FILES["file"]["type"] . "<br>";
echo "File Temp ".$_FILES["file"]["tmp_name"] . "<br>";
echo "File Size ".$_FILES["file"]["size"]."<br>";
move_uploaded_file($_FILES["file"]["tmp_name"],$_FILES["file"]["name"]);
?>
<html>
<title>Simple file uploading in php</title>
<body>
<form method="post" action="fileuploading.php" enctype="multipart/form-data" >
<label for="file">Filename:</label>
<input type="file" name="file" id="file">
<br>
<input type="submit" name="submit" value="Submit">
</form>
</body>
</html>

While loop example in php

2014-06-24T21:51:00.002-07:00

<?php
//While loop example in php(print 1 to 10)
$x=1;
while($x<=10)
{
echo $x;
$x++;
}
?>

switch case example in php

2014-06-24T21:43:00.002-07:00

<?php
//switch case example in php
$day="Sunday";
switch($day)
{
case "Monday":
   echo "Monday";
break;
case "Tuesday":
   echo "Tuesday";
break;
case "Wednesday":
   echo "Wednesday";
break;
case "Thurday":
   echo "Thurday";
break;
case "Friday":
   echo "Friday";
break;
case "Saturday":
   echo "Saturday";
break;
default:
echo "Sunday";
}
?>

what is differences between PHP4 and PHP5

2014-06-24T03:05:00.000-07:00

PHP4 and PHP5:

PHP5 removed register_globals, magic quotes, and safe mode. This was due to the fact that register_globals had opened security holes by intentionally allowing runtime data injection and the use of magic quotes had an unpredictable nature.
PHP4 was powered by Zend Engine 1.0, while PHP5 was powered by Zend Engine II.
PHP5 replaced magic quotes with the addslashes() function in order to escape characters.
PHP4 is more of a procedure language while PHP5 is object oriented.
In PHP5 one can declare a class as Abstract.
PHP5 incorporates static methods and properties.
PHP5 introduces a special function called __autoload()
PHP5 allows one to declare a class or method as Final
PHP5 introduces a number of magic methods, such as __call, __get, __set and __toString
In PHP5, there are 3 levels of visibilities: Public, private and protected.
PHP5 introduced exceptions.
In PHP4, everything was passed by value, including objects. Whereas in PHP5, all objects are passed by reference.
PHP5 introduces interfaces. All the methods defined in an interface must be public.
PHP5 introduces new error level defined as ‘E_STRICT’
PHP5 introduces new default extensions such as SimpleXML, DOM and XSL, PDO, and Hash.
PHP5 introduces new functions.
PHP5 introduces some new reserved keywords.
PHP5 includes additional OOP concepts than php4, like access specifiers , inheritance etc.
PHP5 includes improved support of current content management systems.
PHP5 includes reduced consumption of RAM.
PHP5 introduces increased security against exploitation of vulnerabilities in PHP scripts.
PHP5 introduces easier programming through new functions and extensions.
PHP5 introduces a new MySQL extension named MySQLi for developers using MySQL 4.1 and later.
In PHP5, SQLite has been bundled with PHP.
PHP5 introduces a brand new built-in SOAP extension for interoperability with Web Services.
PHP5 introduces a new SimpleXML extension for easily accessing and manipulating XML as PHP objects. It can also interface with the DOM extension and vice-versa.
In PHP5, streams have been greatly improved, including the ability to access low-level socket operations on streams.

What is the difference between echo and print statement in PHP

2014-06-24T02:37:00.002-07:00

What is the difference between echo and print statement in PHP?

Multiple expressions can be given in echo statement, where as print cannot take multiple expressions.
Echo does not have a return value, where as print returns a value indicating successful execution.
Echo is faster when compared with print.

Create table in mysql

2014-06-23T23:12:00.001-07:00

<?php
create table user(id int(10) NOT NULL AUTO_INCREMENT,username varchar(100) not null,password varchar(100),primary key(id));
?>