Question

我有一个这样的帮助类：

class Helper{   

    public static $app_url = self::getServerUrl();
    /**
    * Gets server url path
    */
    public static function getServerUrl(){
        global $cfg; // get variable cfg as global variable from config.php Modified by Gentle

        $port = $_SERVER['SERVER_PORT'];
        $http = "http";

        if($port == "80"){
          $port = "";  
        }

        if(!empty($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on"){
           $http = "https";
        }
        if(empty($port)){
           return $http."://".$_SERVER['SERVER_NAME']."/".$cfg['afn'];
        }else{
           return $http."://".$_SERVER['SERVER_NAME'].":".$port."/".$cfg['afn']; 
        }        
    }
}

它给了我：

解析错误：语法错误，意外＆＃39;（＆＃39;与公共静态$ app_url = self :: getServerUrl（）;

Answer 1

您的问题是您正在尝试使用自静态函数定义静态变量。由于您从未实例化类（静态）并且您正在调用静态变量，因此无法调用自静态函数。

如果我复制粘贴您的代码并使用PHP 7运行它会产生其他错误：

致命错误：常量表达式在第4行的C：\ inetpub \ wwwroot \ test.php中包含无效操作

要解决您的问题，请使用：

<?php
class Helper {   

    public static $app_url;

    public static function Init() {
        self::$app_url = self::getServerUrl();
    }

    public static function getServerUrl(){

        global $cfg; // get variable cfg as global variable from config.php Modified by Gentle

        $port = $_SERVER['SERVER_PORT'];
        $http = "http";

        if($port == "80"){
          $port = "";  
        }

        if(!empty($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on"){
           $http = "https";
        }
        if(empty($port)){
           return $http."://".$_SERVER['SERVER_NAME']."/".$cfg['afn'];
        }else{
           return $http."://".$_SERVER['SERVER_NAME'].":".$port."/".$cfg['afn']; 
        }

    }

}
Helper::Init();

解析错误：语法错误，意外＆＃39;（＆＃39;

1 个答案: