php检测域名是否被微信封锁

<?php
// 页面编码
header("Content-type:application/json");
  
// 隐藏WARNING
error_reporting(E_ALL ^ E_WARNING);
  
// 获取headers
$checkUrl = get_headers('http://mp.weixinbridge.com/mp/wapredirect?url='.$_REQUEST['url']);
$headerStr = json_encode($checkUrl);
  
// 提取Location后面的
$Location_behind = substr($headerStr, strripos($headerStr, "Location"));
  
// 判断域名状态
if($Location_behind == 'false'){
      
    // 该域名无法正常访问
    $result = array(
        'code' => 201,
        'msg' => '该域名无法正常访问，暂时无法查询访问状态'
    );
}else if(strpos($Location_behind,'weixin110') !== false){
      
    // Location后面包含weixin110就是被封了
    // 域名被封
    $result = array(
        'code' => 202,
        'msg' => '域名被封'
    );
}else{
      
    // 域名被封
    $result = array(
        'code' => 200,
        'msg' => '域名正常'
    );
}
  
// 输出JSON
echo json_encode($result,JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE);
  
?>