在PHP中完成处理后重定向页面 [英] Redirect page after process complete in PHP
问题描述
我在页面中有一些处理.正在下载文件.
I have some process in page. It's downloading a file.
<?php
// getting file with CURL
$ch = curl_init ('http://adress.com/file.csv');
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT,7500);
$rawdata=curl_exec($ch);
curl_close ($ch);
// End Curl Process
// SAVE FILE
$name = Rand(100000,1000000);
$fp = fopen('files/'.$name.'.csv','w');
fwrite($fp, $rawdata);
fclose($fp);
// END SAVE PROCESS
// REDIRECT OTHER PAGE
**header('Location: x.php');**
// END OF PAGE
?>
没关系.但有一个问题.它重定向而无需完成过程.我想在所有过程完成后进行重定向.当我使用该方法重定向时，该文件为空.
This is allright. But there is a problem. It redirects without complete process. I want to redirect after all processes are done. The file is empty when i redirect with that method.
我该怎么办?完成所有过程后，如何重定向页面? php或javascript/jquery.
What must I do? How can i redirect page after all processes are done? php or javascript/jquery.
推荐答案
您的代码应该没问题，并且应该在重定向之前完成该过程.
Your code should be fine, and should complete the process before redirecting.
PHP在单个线程中运行，因此下一个语句要等到前一个语句完成后才能执行.这意味着，在fwrite()完成文件写入之前，您的header()行将不执行.
PHP runs in a single thread, so the next statement won't be executed until the previous one completes. This means that your header() line won't execute until fwrite() has finished writing the file.
实际上，设置Location标头甚至并不意味着PHP脚本停止.您可以通过创建虚拟文件并在发出Location标头后在其上运行unlink()来进行测试.该文件仍将被删除. Location所做的只是向浏览器发送一个新位置.然后，您的浏览器会在旧页面完成运行之前检索新页面.
In fact, setting a Location header doesn't even mean the PHP script stops. You can test this by creating a dummy file and running unlink() on it after issuing the Location header. The file will still be deleted. All that Location does is sends a new location to your browser. Your browser then retrieves the new page before the old one is done running.
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