我正在尝试升级我在SiteGround上托管的WP站点的PHP版本.升级工具显示此错误：

33 | WARNING | Use of deprecated PHP4 style class constructor is not
supported since PHP 7

这是我在给定位置找到的代码：

function gc_XmlBuilder($indent = '  ') {
  $this->indent = $indent;
  $this->xml = '<?xml version="1.0" encoding="utf-8"?>'."\n";
}

我该如何解决这个问题？

解决方法:

将功能更改为：

function __construct($indent = '  ') {
  $this->indent = $indent;
  $this->xml = '<?xml version="1.0" encoding="utf-8"?>'."\n";
}

您以前可以通过类名定义构造函数,并且从PHP 7开始已弃用：

PHP 4 style constructors (methods that have the same name as the class they are defined in) are deprecated, and will be removed in the future. PHP 7 will emit E_DEPRECATED if a PHP 4 constructor is the only constructor defined within a class. Classes that implement a __construct() method are unaffected.

错误示例,根据文档：

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; foo has a deprecated constructor in example.php on line 3