i am facing this error, please help me.
<?php
/*Plugin Name: Contact Form
Plugin URI: http://localhost/redspark/wp-admin
Description: Contact Form Create & Retrive By Ajax
Author: Shifa Memon
Author URI: http://localhost/redspark/wp-admin
Version: 1.0 */
function custom_contact_form_create(){
// echo "Active";
// die();
global $wpdb;
global $table_prefix;
$table = $table_prefix . 'contact_us';
$sql = "CREATE TABLE 'wp_contact_us' (
`id` int(50) NOT NULL PRIMARY KEY AUTO_INCREMENT,
`name` varchar(50) NOT NULL,
`email` varchar(100) NOT NULL,
`subject` text NOT NULL,
`message` longtext NOT NULL,
`timestamp` timestamp NOT NULL DEFAULT current_timestamp() ON
UPDATE current_timestamp())";
$wpdb->query($sql);
}
register_activation_hook(__FILE__,'custom_contact_form_create');
function custom_contact_form_delete(){
global $wpdb;
global $table_prefix;
$table = $table_prefix.'contact-us';
$sql = "DROP TABLE $table";
$wpdb->query($sql);
// echo "Deactivate";
} register_deactivation_hook(FILE ,'custom_contact_form_delete');
}
register_deactivation_hook(__FILE__ ,'custom_contact_form_delete');
?>