在很多任务中我们可能需要发送post请求,但是又不需要或者不想用界面表单的方式,这时就可以使用php中的curl 来模拟表单的提交
首先封装一个curl 方法
private function curlExec($options) { $ch = curl_init (); curl_setopt_array ( $ch, $options ); // 返回json string $result = curl_exec ( $ch ); // 检查是否有错误发生 if (curl_errno ( $ch )) { $error = "curl exec error! " . curl_error ( $ch ); $result = array ( "code" => "1005", "info" => $error ); } curl_close ( $ch ); return $result; }
然后就就是对参数设置的问题, 官方文档刚开始有点不理解,现在详细说明一下:
就curl_setopt()来说,传递一个数组到CURLOPT_POST将会把数据以multipart/form-data的方式编码,然而传递一个URL-encoded字符串将会以application/x-www-form-urlencoded的方式对数据进行编码。
首先是传递进去$post为array, 而且配置中没有使用CURLOPT_POST
CURLOPT_POST=1
这个参数是将 multipart/form-data 类型转换为 application/x-www-form-urlencoded 格式,
如下面的例子传递post请求是以 multipart/form-data 格式:
$post = array ('imagefile' => '@' . $uploadFilePath, 'configfile' => $data ); $url = $this->cfg['baseUrl'].'/upload'; $options = array ( CURLOPT_URL => $url, CURLOPT_POSTFIELDS => $post, CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => 1, CURLOPT_TIMEOUT => 28, CURLOPT_CONNECTTIMEOUT => $this::MAX_CONNECTION_TIME);
下面说URL-encoded 方式,其实就是将参数已字符串拼接的方式进行传递.
如果传递post请求是以 application/x-www-form-urlencoded , 就需要先将参数 用字符串拼接,不能使用数组.
不放心的情况下可是设置 CURLOPT_POST=1 这个要设置在 CURLOPT_POSTFIELDS= $post 下面,
保证 CONTENT_TYPE 始终为 application/x-www-form-urlencoded .
例子如下:
$post = 'ids=123&name=aa';$url = 'http://localhost/Test/test.php'; $options = array ( CURLOPT_URL => $url, CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => 1, CURLOPT_POSTFIELDS => $post, CURLOPT_POST=> 1, CURLOPT_TIMEOUT => 28, CURLOPT_CONNECTTIMEOUT => $this::MAX_CONNECTION_TIME, );
还有一种解决方式就是自己写head头部信息,
如
$options = array ( ... CURLOPT_HTTPHEADER= array('Content-Type: application/x-www-form-urlencoded'),);
如果需要其他Head可以自己添加.

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