[英]Simultaneous users running php script
我有一個簡單的PHP腳本,該腳本發出curl HTTP POST請求,然后通過重定向將數據顯示給用戶。 我遇到的問題是,如果一個以上的人同時運行腳本,它將對一個人成功執行並成功完成,但對另一個人卻失敗。 我認為可能與會話或cookie有關,但我沒有使用session_start(),並且在重定向cookie之前將其清除。
為什么會發生這種情況,我可以調整腳本以支持同時用戶嗎?
<?php
$params = "username=" . $username . "&password=" . $password . "&rememberusername=1";
$url = httpPost("http://www.mysite.com/", $params);
removeAC();
header(sprintf('Location: %s', $url));
exit;
function removeAC()
{
foreach ($_COOKIE as $name => $value)
{
setcookie($name, '', 1);
}
}
function httpPost($url, $params)
{
try {
//open connection
$ch = curl_init($url);
//set the url, number of POST vars, POST data
// curl_setopt($ch, CURLOPT_COOKIEJAR, "cookieFileName");
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)");
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
//execute post
$response = curl_exec($ch);
//print_r(get_headers($url));
//print_r(get_headers($url, 0));
//close connection
curl_close($ch);
return $response;
if (FALSE === $ch)
throw new Exception(curl_error($ch), curl_errno($ch));
// ...process $ch now
}
catch(Exception $e) {
trigger_error(sprintf(
'Curl failed with error #%d: %s',
$e->getCode(), $e->getMessage()),
E_USER_ERROR);
}
}
?>
如果我理解正確,那么您訪問的站點使用會話/ cookie,對嗎? 要解決此問題,請嘗試為每個請求創建一個唯一的Cookie罐:
// at the beginning of your script or function... (possibly in httpPost())
$cookie_jar = tempnam(sys_get_temp_dir());
// ...
// when setting your cURL options:
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
// at the end of your script or function (when you don't need to make any more requests using that session):
unlink($cookie_jar);
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