PHP的file_get_contents返回null时于allow_url_fopen是 [英] php file_get_contents returns null when allow_url_fopen is on

问题描述

我得到的警告消息：的file_get_contents未能打开否认流的权限

I get the warning message: file_get_contents failed to open stream permission denied

我已经设置all_url_open就在php.ini文件中。

I have set all_url_open to on in the php.ini file.

我的PHP文件在我的Apache服务器，它正试图从一个Tomcat服务器访问同一个机器上的URL（即返回JSON）。

My php file is in my apache server and it is trying to access a url (that returns JSON) from a tomcat server on the same machine.

在PHP文件code如下：

The code in the php file looks like:

  $srcURL = 'http://samemachine:8080/returnjson/';

  $results = file_get_contents($srcURL);

我自己也尝试卷曲，它没有返回值，不打Tomcat服务器之一：

I have also tried curl and it returns nothing and doesn't hit the tomcat server either:

    function curl($url){
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept-Language: en-us'));
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
        $data = curl_exec($ch);

        curl_close($ch);
        return $data;
    }

为什么拒绝授权？

Why is permission denied?

推荐答案

• 确保它确实 allow_url_fopen选项，而不是 all_url_open 为你写


• 仔细检查通过运行该的phpinfo（）。请确保它列出的选项，因为启用。如果不重新启动你的web服务器


• 要调试卷曲问题，运行Wireshark的，看罗接口

• Make sure it's really allow_url_fopen and not all_url_open as you wrote
• Double-check this by running phpinfo(). Make sure it lists the option as enabled. If it doesn't restart your web server
• To debug your curl problem, run Wireshark and watch on the lo interface

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