Prevent plugins from update

We can prevent certain plugins from updating themselves or asking to be updated. It can be done using the http_request_args filter


if(!function_exists('custom_prevent_plugin_update_check')){

    function custom_prevent_plugin_update_check( $r, $url ) {
        if ( 0 === strpos( $url, 'http://api.wordpress.org/plugins/update-check/' ) ) {
            $to_be_blocked    = array('plugin-folder-name/plugin-filename.php');

/*Example: array('contact-form-7/wp-contact-form-7.php'). It will prevent contact-form-7  for update check.*/
/*We can block multiple plugins  by specifying their names in this array as above. */        

            if (!empty($to_be_blocked)){
                foreach ($to_be_blocked as $individual){
                    $plugins = unserialize( $r['body']['plugins'] );
                    unset( $plugins->plugins[$individual] );
                    unset( $plugins->active[array_search( $individual,
                               $plugins->active )] );
                    $r['body']['plugins'] = serialize( $plugins );
                }
            }
        }
        return $r;
    }

}

add_filter( 'http_request_args', 'custom_prevent_plugin_update_check',10, 2 );