connection_aborted（）不能在Ajax调用工作 [英] connection_aborted() does not work on ajax calls
问题描述
EDITED
我有一个Ajax调用（使用 $。阿贾克斯（） ），它调用下面的PHP脚本。
I've got an ajax call (using $.ajax()) which calls the following php script.
for ($i=0;$i<40;$i++) {
echo " ";
flush();
if (connection_aborted()) {
log_message('error','CONNECTION IS ABORTED!!!!!');
exit;
}
else {
log_message('error','connection not aborted :(');
}
sleep(1);
}
这也适用于40秒。
如果我关闭它触发调用浏览器窗口， connection_aborted（） 仍然返回false，即使我明确地发出一个字符串，并刷新缓冲区！的
If I close the browser window which triggered the call, connection_aborted() still returns false, even if I sent explicitly a string and flushed the buffer!
有没有人有答案，请在这里？
Does anyone have an answer here please?
推荐答案
您将需要添加ignore_user_abort（真正的）;在上面的PHP脚本，并呼吁使用ob_flush（）相呼应，从脚本的东西后，（为什么看到的 PHP冲水（）手册页 ）。工作示例（概念验证）：
You will need to add "ignore_user_abort(true);" on top of the PHP script, and to call "ob_flush()" after echoing something from script (For why see PHP flush() man page). Working example (proof of concept):
<?php
ignore_user_abort(true);
function log_message($s, $ss) {
$myFile = "log.txt";
$fh = fopen($myFile, 'a') or die("can't open file");
$stringData = $s . ": " . $ss . "\n";
fwrite($fh, $stringData);
fclose($fh);
}
for ($i=0;$i<5;$i++) {
echo "<br>";
//flush();
ob_flush();
if (connection_aborted()) {
log_message('error1', connection_status());
exit;
}
else {
log_message('error2', connection_status());
}
sleep(1);
}
P.S。 CONNECTION_STATUS（）返回0，如果连接仍处于活动状态，并且如果封闭其中一个返回1。
P.S. connection_status() returns 0 if connection is still active, and in case of closed one returns 1.
编辑：
我的坏。通话双方的flush（）和使用ob_flush（）（请从的 这个话题 ），或以其他方式可能无法正常工作，这取决于服务器/ PHP配置。 下面code的测试上WAMP用PHP 5.3.8（工作没有调用flush（）），现在在Ubuntu用PHP 5.3.10。其中，刷新（）调用之前使用ob_flush（）是必要的。
My bad. Call both flush() and ob_flush() (please read flush() man page, link above, and answers from this topic), or otherwise might not work, depending on server/php configuration. The following code was tested on WAMP with PHP 5.3.8 (works without calling flush()), and now on Ubuntu with PHP 5.3.10. where flush() call before ob_flush() is necessary.
全部code来进行测试：
Full code for testing:
index.html的：
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.0.min.js"></script>
<script>
$(document).ready(function() {
$.ajax({
url: "script.php",
context: document.body
}).done(function(data) {
alert(data);
});
})
</script>
</head>
<body>
</body>
</html>
script.php的：
ignore_user_abort(true);
function log_message($type, $message, $file = 'log.txt') {
$fh = fopen($file, 'a') or die("can't open file");
$conn_status = connection_status();
if($conn_status === CONNECTION_NORMAL) {
$status = 'normal';
} elseif($conn_status === CONNECTION_ABORTED) {
$status = 'aborted';
} else {
$status = 'timeout';
}
$aborted = connection_aborted() ? 'yes' : 'no';
$data = $type . ': ' . $message . "\n";
$data .= 'Connection status: ' . $status . "\n";
$data .= 'Aborted: ' . $aborted . "\n\n\n";
fwrite($fh, $data);
fclose($fh);
}
for ($i = 0; $i < 10; $i++) {
echo "<br>";
flush();
ob_flush();
if (connection_aborted()) {
log_message('Error', 'Connection closed by user!');
exit;
}
else {
log_message('Info', 'Everything is fine. Move along...');
}
sleep(1);
}
在你打电话的index.html页，并关闭选项卡或整个浏览器，你应该在log.txt文件接下来的信息，请参阅：
After you call index.html page, and close tab or whole browser you should see in log.txt file next info:
Info: Everything is fine. Move along...
Connection status: normal
Aborted: no
Info: Everything is fine. Move along...
Connection status: normal
Aborted: no
Info: Everything is fine. Move along...
Connection status: normal
Aborted: no
Error: Connection closed by user!
Connection status: aborted
Aborted: yes
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