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一、CURL小结
个人将归纳curl请求总结成三步
1、创建curl 句柄(curl_init),并设置参数(curl_setopt)(打开冰箱)
2、执行请求(curl_exec),处理返回的数据 (把大象塞进去)
3、关闭curl(curl_close),释放所有资源(关上冰箱)
其实如果代码看起来比较复杂,复杂的地方可能就是在处理返回数据的逻辑。
二、CURL_SETOPT
故名思议,SetOption 设置参数,其中囊括的参数较多,这里只是简单提取常用的几个,如需查看更多参数,点击这里,常见的设置UA、Cookie、https等
bool curl_setopt ( , int , "User-Agent: ""Referer: " 禁止 cURL 验证对等证书(peer'
如需返回的Header头,自行添加
curl_setopt($curl, CURLOPT_HEADER, 1);
判断返回的状态码:
curl_getinfo(, CURLINFO_HTTP_CODE) if(curl_getinfo($curl, CURLINFO_HTTP_CODE) == '200')
简单版的GET请求如下,下面以请求百度为例,只设置了最基本的属性:
=, CURLOPT_URL, 'http://www.baidu.com', CURLOPT_HEADER, 1, CURLOPT_RETURNTRANSFER, 1 = curl_exec((); ?>
稍微复杂的设置了UA、Cookie等,https请求中才需要只用的SSL证书校验,http请求中可不用,如果需要请求有规律的地址,类似https://example.com/?id=$i,修改for循环即可。
<?php class getRequest { const sUA = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)'; const sURL = 'https://www.baidu.com'; const sCookie = 'fake if you want'; function vInitRequest() { $curl = curl_init(); curl_setopt($curl, CURLOPT_HEADER, self::sUA); curl_setopt($curl, CURLOPT_COOKIE, self::sCookie); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); /* * ssl check,use for https url */ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1);// for ($iId = 1; $iId < 1000; $iId++) { // $sURL = self::sURL.$iId; curl_setopt($curl, CURLOPT_URL, self::sURL); $this->sExecRequest($curl);// } } function sExecRequest($curl) { $sRet = curl_exec($curl); print_r($sRet); /** * handle your response * stripos or preg */ curl_close($curl); } }$foo = new getRequest();$foo->vInitRequest();?>
三、分离Response里面的 Header和Body
首先要显示Header信息需要设置,如下设置即可取到header和body,当然还有其他方法大同小异
curl_setopt($curl, CURLOPT_HEADER, 1);list($sHeader, $sBody) = explode("\r\n\r\n", $sRet, 2);
完整代码:
<?php class getRequest { const sUA = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)'; const sURL = 'https://www.baidu.com'; const sCookie = 'fake if you want'; function vInitRequest() { $curl = curl_init(); $i = 0; curl_setopt($curl, CURLOPT_HEADER, self::sUA); curl_setopt($curl, CURLOPT_COOKIE, self::sCookie); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_HEADER, 1); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1); curl_setopt($curl, CURLOPT_URL, self::sURL); $this->sExecRequest($curl); } function sExecRequest($curl) { $sRet = curl_exec($curl); // if (curl_getinfo($curl, CURLINFO_HTTP_CODE) == '200') { list($sHeader, $sBody) = explode("\r\n\r\n", $sRet, 2); // } print_r($sHeader); print_r($sBody); // curl_close($curl); } }$foo = new getRequest();$foo->vInitRequest();?>
四、POST请求
POST请求无非比上述Get请求多设置了两个参数。
1、嘿,我要用POST提交数据了。
2、我POST的数据的内容
curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, array('user'=>'test'));
简单版如下:
<?php$curl = curl_init(); curl_setopt($curl, CURLOPT_URL, 'http://www.baidu.com'); curl_setopt($curl, CURLOPT_HEADER, 1); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POST, 1);$aPostData = array( 'username' => 'test', .....); curl_setopt($curl, CURLOPT_POSTFIELDS, $aPostData);$sData = curl_exec($curl); curl_close($curl);var_dump($sData);?>
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