PHP發起HTTP請求方式有:1、透過【file_get_contents】發送get請求;2、透過【CURL】發送get請求;3、透過【fsocket】發送get請求。
PHP發起HTTP請求方式有:
curl仍然是最好的HTTP庫,沒有之一。可以解決任何複雜的應用場景中的HTTP 請求;
檔案流式的HTTP請求比較適合處理簡單的HTTP POST/GET請求,但不適用於複雜的HTTP請求;
PECL_HTTP擴充寫程式碼更簡潔,省事, 但成熟度不好,程式介面不統一,文件和實例匱乏。
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#1、file_get_contents發送get請求
<?php /** * 发送post请求 * @param string $url 请求地址 * @param array $post_data post键值对数据 * @return string */ function send_post($url, $post_data) { $postdata = http_build_query($post_data); $options = array( 'http' => array( 'method' => 'POST', 'header' => 'Content-type:application/x-www-form-urlencoded', 'content' => $postdata, 'timeout' => 15 * 60 // 超时时间(单位:s) ) ); $context = stream_context_create($options); $result = file_get_contents($url, false, $context); return $result; } $post_data = array( 'username' => 'abcdef', 'password' => '123456' ); send_post('http://xxx.com', $post_data);
2、透過CURL發送get請求
<?php $ch=curl_init('http://www.xxx.com/xx.html'); curl_setopt($ch,CURLOPT_RETURNTRANSFER,true); curl_setopt($ch,CURLOPT_BINARYTRANSFER,true); $output=curl_exec($ch); $fh=fopen("out.html",'w'); fwrite($fh,$output); fclose($fh);
3、透過fsocket發送get請求
/** * Socket版本 * 使用方法: * $post_string = "app=socket&version=beta"; * request_by_socket('blog.snsgou.com', '/restServer.php', $post_string); */ function request_by_socket($remote_server,$remote_path,$post_string,$port = 80,$timeout = 30) { $socket = fsockopen($remote_server, $port, $errno, $errstr, $timeout); if (!$socket) die("$errstr($errno)"); fwrite($socket, "POST $remote_path HTTP/1.0"); fwrite($socket, "User-Agent: Socket Example"); fwrite($socket, "HOST: $remote_server"); fwrite($socket, "Content-type: application/x-www-form-urlencoded"); fwrite($socket, "Content-length: " . (strlen($post_string) + 8) . ""); fwrite($socket, "Accept:*/*"); fwrite($socket, ""); fwrite($socket, "mypost=$post_string"); fwrite($socket, ""); $header = ""; while ($str = trim(fgets($socket, 4096))) { $header .= $str; } $data = ""; while (!feof($socket)) { $data .= fgets($socket, 4096); } return $data; }
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