PHP發起HTTP請求有哪幾種方式?

2020-07-16 10:06:28

PHP發起HTTP請求方式有:1、通過【file_get_contents】傳送get請求;2、通過【CURL】傳送get請求;3、通過【fsocket】傳送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擴充套件寫程式碼更加簡潔,省事, 但成熟度不好,程式設計介面不統一,文件和範例匱乏。

1、file_get_contents傳送get請求

<?php
/**
 * 傳送post請求
 * @param string $url 請求地址
 * @param array $post_data post鍵值對資料
 * @return string
 */
function send_post($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 // 超時時間(單位: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、通過CURL傳送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、通過fsocket傳送get請求

/**
 * Socket版本
 * 使用方法:
 * $post_string = "app=socket&amp;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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