• 怎么用PHP发送HTTP请求(POST请求、GET请求)?


    file_get_contents版本:

    01    /**
    02     * 发送post请求
    03     * @param string $url 请求地址
    04     * @param array $post_data post键值对数据
    05     * @return string
    06     */
    07    function send_post($url, $post_data) {
    08     
    09        $postdata = http_build_query($post_data);
    10        $options = array(
    11            'http' =>; array(
    12                'method' =>; 'POST',
    13                'header' =>; 'Content-type:application/x-www-form-urlencoded',
    14                'content' =>; $postdata,
    15                'timeout' =>; 15 * 60 // 超时时间(单位:s)
    16            )
    17        );
    18        $context = stream_context_create($options);
    19        $result = file_get_contents($url, false, $context);
    20     
    21        return $result;
    22    }

    使用如下:

    1    post_data = array(
    2        'username' => 'stclair2201',
    3        'password' => 'handan'
    4    );
    5    send_post('http://blog.snsgou.com', $post_data);

    实战经验:

    当我利用上述代码给另一台服务器发送http请求时,发现,如果服务器处理请求时间过长,本地的PHP会中断请求,即所谓的超时中断,第一个怀疑的是PHP本身执行时间的超过限制,但想想也不应该,因为老早就按照这篇文章设置了“PHP执行时间限制”(【推荐】PHP上传文件大小限制大全 ),仔细琢磨,想想,应该是http请求本身的一个时间限制,于是乎,就想到了怎么给http请求时间限制搞大一点。。。。。。查看PHP手册,果真有个参数 “ timeout ”,默认不知道多大,当把它的值设大一点,问题得已解决,弱弱地做个笔记~~~

    Socket版本:

    01    /**
    02     * Socket版本
    03     * 使用方法:
    04     * $post_string = "app=socket&version=beta";
    05     * request_by_socket('blog.snsgou.com', '/restServer.php', $post_string);
    06     */
    07    function request_by_socket($remote_server,$remote_path,$post_string,$port = 80,$timeout = 30) {
    08        $socket = fsockopen($remote_server, $port, $errno, $errstr, $timeout);
    09        if (!$socket) die("$errstr($errno)");
    10        fwrite($socket, "POST $remote_path HTTP/1.0");
    11        fwrite($socket, "User-Agent: Socket Example");
    12        fwrite($socket, "HOST: $remote_server");
    13        fwrite($socket, "Content-type: application/x-www-form-urlencoded");
    14        fwrite($socket, "Content-length: " . (strlen($post_string) + 8) . "");
    15        fwrite($socket, "Accept:*/*");
    16        fwrite($socket, "");
    17        fwrite($socket, "mypost=$post_string");
    18        fwrite($socket, "");
    19        $header = "";
    20        while ($str = trim(fgets($socket, 4096))) {
    21            $header .= $str;
    22        }
    23     
    24        $data = "";
    25        while (!feof($socket)) {
    26            $data .= fgets($socket, 4096);
    27        }
    28     
    29        return $data;
    30    }

    Curl版本:

    01    /**
    02     * Curl版本
    03     * 使用方法:
    04     * $post_string = "app=request&version=beta";
    05     * request_by_curl('http://blog.snsgou.com/restServer.php', $post_string);
    06     */
    07    function request_by_curl($remote_server, $post_string) {
    08        $ch = curl_init();
    09        curl_setopt($ch, CURLOPT_URL, $remote_server);
    10        curl_setopt($ch, CURLOPT_POSTFIELDS, 'mypost=' . $post_string);
    11        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    12        curl_setopt($ch, CURLOPT_USERAGENT, "snsgou.com's CURL Example beta");
    13        $data = curl_exec($ch);
    14        curl_close($ch);
    15     
    16        return $data;
    17    }

    Curl版本(2)

    01    /**
    02     * 发送HTTP请求
    03     *
    04     * @param string $url 请求地址
    05     * @param string $method 请求方式 GET/POST
    06     * @param string $refererUrl 请求来源地址
    07     * @param array $data 发送数据
    08     * @param string $contentType
    09     * @param string $timeout
    10     * @param string $proxy
    11     * @return boolean
    12     */
    13    function send_request($url, $data, $refererUrl = '', $method = 'GET', $contentType = 'application/json', $timeout = 30, $proxy = false) {
    14        $ch = null;
    15        if('POST' === strtoupper($method)) {
    16            $ch = curl_init($url);
    17            curl_setopt($ch, CURLOPT_POST, 1);
    18            curl_setopt($ch, CURLOPT_HEADER,0 );
    19            curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);
    20            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    21            curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
    22            curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    23            if ($refererUrl) {
    24                curl_setopt($ch, CURLOPT_REFERER, $refererUrl);
    25            }
    26            if($contentType) {
    27                curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type:'.$contentType));
    28            }
    29            if(is_string($data)){
    30                curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    31            } else {
    32                curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
    33            }
    34        } else if('GET' === strtoupper($method)) {
    35            if(is_string($data)) {
    36                $real_url = $url. (strpos($url, '?') === false ? '?' : ''). $data;
    37            } else {
    38                $real_url = $url. (strpos($url, '?') === false ? '?' : ''). http_build_query($data);
    39            }
    40     
    41            $ch = curl_init($real_url);
    42            curl_setopt($ch, CURLOPT_HEADER, 0);
    43            curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type:'.$contentType));
    44            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    45            curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    46            if ($refererUrl) {
    47                curl_setopt($ch, CURLOPT_REFERER, $refererUrl);
    48            }
    49        } else {
    50            $args = func_get_args();
    51            return false;
    52        }
    53     
    54        if($proxy) {
    55            curl_setopt($ch, CURLOPT_PROXY, $proxy);
    56        }
    57        $ret = curl_exec($ch);
    58        $info = curl_getinfo($ch);
    59        $contents = array(
    60                'httpInfo' => array(
    61                        'send' => $data,
    62                        'url' => $url,
    63                        'ret' => $ret,
    64                        'http' => $info,
    65                )
    66        );
    67     
    68        curl_close($ch);
    69        return $ret;
    70    }

    调用 WCF接口 的一个例子:$json = restRequest($r_url,'POST', json_encode($data));

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  • 原文地址:https://www.cnblogs.com/easirm/p/4234047.html
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