PHP模拟POST、GET请求

[php]代码库

if(function_exists('curl_init'))
{
　　$ch = curl_init();
　　curl_setopt($ch, CURLOPT_URL, $url_with_get);
　　curl_setopt($ch, CURLOPT_POST, 1);
　　curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
　　curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
　　$result = curl_exec($ch);
　　curl_close($ch);
}
else
{
　　$content = http_build_query($post)
　　$content_length = strlen($content);
　　$context =
      　　array('http' =>
              array('method' => 'POST',
                    'user_agent' => $user_agent,
                    'header' => 'Content-Type: ' . $content_type . "\r\n" .
                                'Content-Length: ' . $content_length,
                    'content' => $content));
    $context_id = stream_context_create($context);
    $sock = fopen($url_with_get, 'r', false, $context_id);
    $result = '';
    if ($sock)
　　{
　　　　while (!feof($sock)) 
        　　$result .= fgets($sock, 4096);
      　　fclose($sock);
    }
    return $result;
  }
}