我正在尝试在PHP中启动会话以存储有关用户ID的数据(将在mySQL数据库中使用)。
然而,当我开始会话时,我收到以下错误:
Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /Applications/MAMP/blah) in /Applications/MAMP/blah on line 38
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /Applications/MAMP/blah) in /Applications/MAMP/blah on line 38
我理解错误是说它无法启动会话,因为页面已经提交,或者#34;标头已经发送"但我很困惑,因为它引用的行,第38行,是启动会话的行:
Line 38: session_start();
那么如何说这个标题已经被这一行发送了,那是错误的呢?
这是我的代码的缩短部分。需要注意的是,有一部分HTML是通过AJAX使用jQuery加载的,可能就是这样吗?
<!DOCTYPE html>
<html>
<head>
<title>Title</title>
</head>
<body>
<div class="wrapper">
<div id="quiz-section">
// This part is where the HTML content loads via AJAX
</div>
</div>
<!-- Below PHP looks at the referral i.e how the user landed on this page -->
<?php
session_start();
require 'connect.php';
if (!mysqli_query($con,"INSERT INTO entries (referral) VALUES ('$ref')")){
echo("Error description: " . mysqli_error($con));
return false;
}
$_SESSION["sessionID"] = mysqli_insert_id($con);
mysqli_close($con);
?>
</body>
<script>
// some jQuery here to load in the HTML content to the AJAX pane
</script>
</html>
答案 0 :(得分:4)
您在session_start()
之前输出HTML。将您的PHP代码放在HTML代码之上。