一、什么是企业三要素？

企业三要素即传入的企业名称、法人名称、社会统一信用代码或注册号，校验此三项是否一致。

二、具体怎么样通过PHP实现接口调用？

下面我们以阿里云为例，通过PHP示例代码进行调用，参考如下：

接口地址：https://market.aliyun.com/apimarket/detail/cmapi00068871?#sku=yuncode6287100001

<?php
    $host = "https://kzcpthree.market.alicloudapi.com";
    $path = "/company_three/check";
    $method = "POST";
    $appcode = "你自己的AppCode";
    $headers = array();
    array_push($headers, "Authorization:APPCODE " . $appcode);
    //根据API的要求，定义相对应的Content-Type
    array_push($headers, "Content-Type".":"."application/x-www-form-urlencoded; charset=UTF-8");
    $querys = "";
    $bodys = "creditCode=creditCode&companyName=companyName&legalPerson=legalPerson";
    $url = $host . $path;

    $curl = curl_init();
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($curl, CURLOPT_FAILONERROR, false);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HEADER, true);
    if (1 == strpos("$".$host, "https://"))
    {
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    }
    curl_setopt($curl, CURLOPT_POSTFIELDS, $bodys);
    var_dump(curl_exec($curl));
?>

正确返回示例代码如下：

{
    "msg": "成功",
    "success": true,
    "code": 200,
    "data": {
        "result": 2, //1一致，2不一致
        "orderNo": "202412012048184836138",
        "companyName": true,   //true 正确， false 错误
        "legalPerson": false,
        "creditNo": true
    }
}