php生成多条sql记录

<?php    $myFile = 'insert.sql';    $fhandler=fopen($myFile,'wb');    $i = 0;    while ($i<1000000)    {        $i++;        $sql = 'insert into tab_test(no,name)values('.$i.",'n_".$i."');";        fwrite($fhandler,$sql."\r\n");    }    echo '成功';    exit;?>