w3spi5

<?php

/**
 * Related with utf8 problems and based on differents answers from https://stackoverflow.com/a/19366999/3452348
 * This function is at the time of writing, for me, the best improved version existing actually.
 *
 * This function is designed to uniformly encode data as UTF-8. It handles strings by attempting
 * to detect the current encoding and converting it to UTF-8. For arrays and objects, it applies
 * the conversion recursively to each element or property. The function tries a predefined list
 * of common encodings if automatic detection fails. Note that only public properties of objects

w3spi5

<?php
public static function isLocal(): bool
{
  return in_array($_SERVER['REMOTE_ADDR'], ['127.0.0.1', '::1']);
}