Get a YouTube video thumbnail from the YouTube API

you can get youtube video information in json by file_get_contents then you need to decode that json data to get thumbnil:

http://www.webetutorial.com/question/get-a-youtube-video-thumbnail-from-the-youtube-api/

WooCommerce add custom field, product category and product tag after product summery

<?php

function iconic_output_engraving_field() {
    global $product;
 $catg = get_the_terms( get_the_ID(), 'product_cat' );
 $cnam ='';
 foreach($catg as $name){
   if($cnam ==''){

for more to visit URL http://www.webetutorial.com/question/woocommerce-add-custom-field-product-category-and-product-tag-after-product-summery/ 

error sending email with gmail smtp

A PHP Error was encountered
Severity: Warning
Message: fsockopen() [function.fsockopen]: unable to connect to ssl://smtp.gmail.com:465 (Connection timed out)
Filename: libraries/Email.php

Could anyone help me?

Programmatically Set the WordPress User Role

you can use add role hook of wordpress to add new role:

$user = new WP_User( $user_id );
$user->add_cap( $staudent);
$user->remove_cap( 'professors');

How to add custom post type to WooCommerce

you can add below hook to add new custom post type:

add_action( 'init', 'create_post_for_pro' );
   function create_post_for_pro() {
 register_post_type( 'meal',array());

}