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;

?>