php post json数据 and php 模拟post 提交普通数据

postjson.php

<?php
    /**
     * post json数据
     *
     * @param str $url         posturl
     * @param str $data_string json字符串
     *
     * @return json_string
     */
    function postjson($url, $data_string)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt(
            $ch, 
            CURLOPT_HTTPHEADER, 
            array(
            'Content-Type: application/json',
            'Content-Length: ' . strlen($data_string)
            )
        );        
        $result = curl_exec($ch);
        return $result;
    }
    
    /**
     * php 模拟post 提交数据
     *
     * @param str $url         posturl
     * @param str $data_string 参数
     *
     * @return response
     */
    function http_post($url, $data_string)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt(
            $ch, 
            CURLOPT_HTTPHEADER, 
            array(
            'Content-Type: application/x-www-form-urlencoded',
            'Content-Length: ' . strlen($data_string)
            )
        );
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }