PHP SESSION数组最终出错

Question

快速PHP问题.我对PHP有点新意,所以请耐心等待.

为什么这会导致500服务器错误？

<?php
//session start
session_start();

//one time ticket is issued
$ticket = md5(uniqid(mt_rand),TRUE);

//put var ticket in SESSION array which is used in next page.
$_SESSION['ticket'][] = $ticket;

...

$_SESSION['ticketPOST'] = $_POST['ticket'];

...

//functionize htmlspecialchars
function h($string) {
    return htmlspecialchars($string, ENT_QUOTES);
}

?>

在下面的同一个文件中,我写了这样的东西:

<form action="brahbrah.php" method="post">
<input type="hidden" name="ticket" value="<?php echo h($ticket); ?>">
<input type="submit" name="indexForm" value="preview">
</form>

任何帮助赞赏.感谢名单.

Answer 1

$ticket = md5(uniqid(mt_rand()),TRUE);

mt_rand是一个功能,你忘了放 ()