这个正则如何写？

<?php

$array = array("CREATE TABLE `order_log_1` (`_id` int(11) NOT NULL AUTO_INCREMENT,,`order_info` text,`insert_time` int(11) DEFAULT NULL,PRIMARY KEY (`_id`))",
    "CREATE TABLE `order_log_2` (`_id` int(11) NOT NULL AUTO_INCREMENT,,`order_info` text,`insert_time` int(11) DEFAULT NULL,PRIMARY KEY (`_id`))",
    "CREATE TABLE `order_log_3` (`_id` int(11) NOT NULL AUTO_INCREMENT,,`order_info` text,`insert_time` int(11) DEFAULT NULL,PRIMARY KEY (`_id`))",
);


$pattern = '/CREATE TABLE `(w+)`/i';


foreach ($array as $item) {

    if (preg_match($pattern, $item, $match)) {

        var_dump($match[1]);
    }

}




?>