php调用远程url的四种方法

225025

1、 用file_get_contents 以get方式获取内容
示例：
$html = file_get_contents($url);
2、 用fopen打开url, 以get方式获取内容
示例：
$fp = fopen($url, 'r');
$html = stream_get_meta_data($fp);
3、用 file_get_contents函数,以post方式获取url
$data = array ('test' => 'hellword');
$data = http_build_query($data);
$opts = array (
'http' => array (
'method' => 'POST',
'header'=> "Content-type: application/x-www-form-urlencoded\r\n" .
"Content-Length: " . strlen($data) . "\r\n",
'content' => $data
),
);
$context = stream_context_create($opts);
$html = file_get_contents($url, false, $context);
4、使用curl库，使用 curl库之前，需先确认有打开curl扩展
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
echo $file_contents;