In what ways can different text editors affect the encoding of PHP files and potentially lead to issues with special characters?

Different text editors may use different encoding settings when saving PHP files, which can lead to issues with special characters. To ensure compatibility and avoid problems, it's important to use a text editor that supports UTF-8 encoding, which is the standard for PHP files. Additionally, setting the encoding declaration at the beginning of the PHP file can help specify the character set to be used.

<?php
header('Content-Type: text/html; charset=utf-8');
?>