Php Tutorials

Fetch data (messages) in every second with ajax (setinterval) from mysql (PHP) in wordpress. In main file <script> jQuery(document).ready(function($){ var own_id = $("#own_id").val(); var user_id = $("#user_id").val(); alert('helo'); function sandeep(){ var data = { 'action':'fetch_message', 'own_id':own_id, 'user_id':user_id, } $.post(myajax.ajaxurl,data,function(response){ //$("#response").html(response); $("#jassi").html(response); console.log(response); }); } setInterval(function(){ sandeep(); }, 500); }); </script> <div id="jassi"> </div> In Funtion.php file  function fetch_message(){ $msg_content = $_POST['msg_content']; $own_id = $_POST['own_id']; $user_id = $_POST['user_id']; echo $user_id; global

Shrink navbar on scroll  <style> .nav_logo_scroll{ width: 120px !important;     transition: all 0.5s linear; margin-left: 45px } .jassi{ width: 100% !important;   transition: all 0.5s linear; } </style> <script> jQuery(document).ready(function($){ $(window).scroll(function() { if($(document).scrollTop() >=1) { $('.nav').css('position','fixed'); $('.nav_logo').addClass('nav_logo_scroll'); $('.nav_logo').css(' transition','all 0.5s linear'); $('.nav_logo').removeClass('jassi'); } else if($(document).scrollTop() < 250) { {  $('.nav').css('position','relative'); $('.nav').css(' transition','all 0.5s linear'); $('.nav_logo').removeClass('nav_logo_scroll'); $('.nav_logo').addClass('jassi'); } } }); }); </script>

Alternative to “header” for re-directs in PHP function redirect($url) {     if (!headers_sent())     {            header('Location: '.$url);         exit;         }     else         {          echo '<script type="text/javascript">';         echo 'window.location.href="'.$url.'";';         echo '</script>';         echo '<noscript>';         echo '<meta http-equiv="refresh" content="0;url='.$url.'" />';         echo '</noscript>'; exit;     } }

Detect the current user has an active subscription in Woocommerce. function has_active_subscription( $user_id=null ) {     // When a $user_id is not specified, get the current user Id     if( null == $user_id && is_user_logged_in() )         $user_id = get_current_user_id();     // User not logged in we return false     if( $user_id == 0 )         return false;     // Get all active subscriptions for a user ID     $active_subscriptions = get_posts( array(         'numberposts' => 1, // Only one is enough         'meta_key'    => '_customer_user',         'meta_value'  => $user_id,         'post_type'   => 'shop_subscription', // Subscription post type         'post_status' => 'wc-active', // Active subscription         'fields'      => 'ids', // return only IDs (instead of complete post objects)     ) );     return sizeof($active_subscriptions) == 0 ? false

PHP | ob_start() Function PHP is an interpreted language thus each statement is executed one after another, therefore PHP tends to send HTML to browsers in chunks thus reducing performance. Using output buffering the generated HTML gets stored in a buffer or a string variable and is sent to the buffer to render after the execution of the last statement in the PHP script. But Output Buffering is not enabled by default. In order to enable the Output Buffering one must use the ob_start() function before any echoing any HTML content in a script. function jassi { ob_start(); echo "Hello there!"; $output = ob_get_contents(); ob_end_clean(); } OR function jassi { ob_start(); echo "Hello there!"; $obc = ob_get_contents(); ob_end_clean(); return $obc; }

Check user is logged in woocommerce and wordpress. if ( is_user_logged_in() ) {    // your code for logged in user } else {    // your code for logged out user }

Add cart product in cart with link (URL) in woocommerce href=”http:// yourtsite.com /?add-to-cart=3083″ href=”http://yourtsite.com/?add-to-cart=3084&quantity=3″