PHP在服务器下载文件时保持HTTP连接？(WP升级)

 ```php

 $url = '文件的URL地址';

 $file = '保存文件的路径和文件名';

 $ch = curl_init();

 curl_setopt($ch, CURLOPT_URL, $url);

 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);

 curl_setopt($ch, CURLOPT_TIMEOUT, 0);

 $data = curl_exec($ch);

 curl_close($ch);

 file_put_contents($file, $data);

 ```

 ```php

 $url = '文件的URL地址';

 $file = '保存文件的路径和文件名';

 $context = stream_context_create(['http' => ['timeout' => 0]]);

 $data = file_get_contents($url, false, $context);

 file_put_contents($file, $data);

 ```

 ```php

 $url = '文件的URL地址';

 $file = '保存文件的路径和文件名';

 $ch = curl_init();

 curl_setopt($ch, CURLOPT_URL, $url);

 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);

 curl_setopt($ch, CURLOPT_TIMEOUT, 0);

 curl_setopt($ch, CURLOPT_RANGE, '0-102400'); // 下载前100KB的数据

 $data = curl_exec($ch);

 curl_close($ch);

 file_put_contents($file, $data);

 ```

 ```php

 $url = '文件的URL地址';

 $file = '保存文件的路径和文件名';

 $context = stream_context_create([

     'http' => [

         'timeout' => 0,

         'header' => 'Range: bytes=0-102400' // 下载前100KB的数据

     ]

 ]);

 $data = file_get_contents($url, false, $context);

 file_put_contents($file, $data);

 ```