: When set to true , the function only returns an encoding if the string is 100% valid for that set. If false , it returns the closest match. Significant Changes in PHP 8.1+
composer require neitanod/forceutf8
<?php function is_utf8($str) return preg_match('//u', $str); detect encoding php
Detection is never 100% accurate. Instead of guessing, try to find the encoding at the source: : When set to true , the function
If your default order is UTF-8, ISO-8859-1 : : When set to true
Here is a robust, native helper function you can drop into your project: