PHP：空结果 - file_get_contents

Question

我在我的网站上使用 file_get_contents 到运行一个 php 脚本，它将一些数据导出到文本文件中。 php 脚本 "export.php" 在作业完成时打印出 "OK"，如果发生错误则打印出 "Error"。

如果我运行 export.php 在我的浏览器中它会打印 "OK" 如果我运行它通过在另一个 php 中调用 file_get_contents脚本结果为空。但是 export.php 在任何情况下都会打印 "OK" 或 "Error"。

这是我调用 export.php:

的脚本

$opts = array('http' =>
                array(
                    'method'  => 'GET',
                    'timeout' => 240 
                )
            );

            $context  = stream_context_create($opts);
            $url_pre = "http://";
            $url = "127.0.0.1/export.php";
            $html = @file_get_contents($url_pre.$url,false,$context);
            if ($html === false){
                $job_ok=false;
                $result=error_get_last();
                echo "Error: ".$result."<br />";
            }else{
                if (substr($html,0,2)=="OK"){
                    $job_ok=true;
                    $errurl = "";
                    $result="Job done";
                    echo "Job done: ".$result."<br />";
                }else{
                    $job_ok=false;
                    $errurl = $url_pre.$url;
                    $result=$html;
                    echo "Error: ".$result."<br />";
                }
            }
            echo "HTML: $html <br />";

脚本的结果是：

Error:

如果我在浏览器中打开“http://127.0.0.1/export.php”，我会得到：

OK

也许有人可以帮助我！

谢谢！

Answer 1

我已将 file_get_contents 更改为 curl，现在可以使用了！

function curl_file_get_contents($url){
 $curl = curl_init();
 $userAgent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)';

 curl_setopt($curl,CURLOPT_URL,$url); //The URL to fetch. This can also be set when initializing a session with curl_init().
 curl_setopt($curl,CURLOPT_RETURNTRANSFER,TRUE); //TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
 curl_setopt($curl,CURLOPT_CONNECTTIMEOUT,5); //The number of seconds to wait while trying to connect.  

 curl_setopt($curl, CURLOPT_USERAGENT, $userAgent); //The contents of the "User-Agent: " header to be used in a HTTP request.
 curl_setopt($curl, CURLOPT_FAILONERROR, TRUE); //To fail silently if the HTTP code returned is greater than or equal to 400.
 curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE); //To follow any "Location: " header that the server sends as part of the HTTP header.
 curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE); //To automatically set the Referer: field in requests where it follows a Location: redirect.
 curl_setopt($curl, CURLOPT_TIMEOUT, 240); //The maximum number of seconds to allow cURL functions to execute.  

 $contents = curl_exec($curl);
 curl_close($curl);
 return $contents;
}

PHP：空结果 - file_get_contents

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