PHP development skills (8)-Code details of CURL request
There are many ways to access remote URLs in PHP, such as using file_get_contents to obtain content; using fopen to open ur to obtain content; using fsockopen function to open url to obtain content, etc. However, the most recommended method is to use CURL for access.
<?php /** * ======================================= * Created by Zhihua_W. * Author: Zhihua_W * Date: 2016/12/12 0008 * Time: 下午 2:17 * Project: PHP开发小技巧 * Power: CURL请求 * ======================================= */ /** * CURL请求 * @param $url 请求url地址 * @param $method 请求方法 get post * @param null $postfields post数据数组 * @param array $headers 请求header信息 * @param bool|false $debug 调试开启 默认false * @return mixed */ function httpRequest($url, $method, $postfields = null, $headers = array(), $debug = false) { $method = strtoupper($method); $ci = curl_init(); /* Curl settings */ curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); curl_setopt($ci, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0"); curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 60); /* 在发起连接前等待的时间,如果设置为0,则无限等待 */ curl_setopt($ci, CURLOPT_TIMEOUT, 7); /* 设置cURL允许执行的最长秒数 */ curl_setopt($ci, CURLOPT_RETURNTRANSFER, true); switch ($method) { case "POST": curl_setopt($ci, CURLOPT_POST, true); if (!empty($postfields)) { $tmpdatastr = is_array($postfields) ? http_build_query($postfields) : $postfields; curl_setopt($ci, CURLOPT_POSTFIELDS, $tmpdatastr); } break; default: curl_setopt($ci, CURLOPT_CUSTOMREQUEST, $method); /* //设置请求方式 */ break; } $ssl = preg_match('/^https:\/\//i', $url) ? TRUE : FALSE; curl_setopt($ci, CURLOPT_URL, $url); if ($ssl) { curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts curl_setopt($ci, CURLOPT_SSL_VERIFYHOST, FALSE); // 不从证书中检查SSL加密算法是否存在 } //curl_setopt($ci, CURLOPT_HEADER, true); /*启用时会将头文件的信息作为数据流输出*/ curl_setopt($ci, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ci, CURLOPT_MAXREDIRS, 2);/*指定最多的HTTP重定向的数量,这个选项是和CURLOPT_FOLLOWLOCATION一起使用的*/ curl_setopt($ci, CURLOPT_HTTPHEADER, $headers); curl_setopt($ci, CURLINFO_HEADER_OUT, true); /*curl_setopt($ci, CURLOPT_COOKIE, $Cookiestr); * *COOKIE带过去** */ $response = curl_exec($ci); $requestinfo = curl_getinfo($ci); $http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE); if ($debug) { echo "=====post data======\r\n"; var_dump($postfields); echo "=====info===== \r\n"; print_r($requestinfo); echo "=====response=====\r\n"; print_r($response); } curl_close($ci); return $response; //return array($http_code, $response,$requestinfo); } $url = "http://zhutuan.chuangkeweilai.cn/jiancai/admin/index.php?act=cache&op=kppwcache"; httpRequest($url, $method, $postfields = null, $headers = array(), $debug = true) ?>
Related articles:
The url parameter problem when php uses curl to initiate a get request
Using curl to send requests in PHP ( GET request and POST request)
Detailed examples of precautions for PHP to use the curl function to send Post requests
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