Title rewritten to read: PHP 7 is no longer compatible with using deprecated PHP4-style class constructors

Question

I'm trying to upgrade the PHP version of my WP website, which is hosted on SiteGround. The upgrade tool displays the following error:

33 | WARNING | As of PHP 7, using the deprecated PHP4-style class constructors is not supported

This is the code I found at the given location:

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

How do I fix this problem?

Answer 1

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

Since you used to be able to define constructors by class name, but this has been deprecated since PHP 7:

Error example, according to the documentation: