Why is it important to ensure uniform character encoding throughout a PHP project?

It is important to ensure uniform character encoding throughout a PHP project to avoid issues with displaying and processing text data. Inconsistent character encoding can lead to garbled text, incorrect string length calculations, and other unexpected behavior. To ensure uniform character encoding, it is recommended to set the default encoding for PHP scripts using the `mb_internal_encoding()` function.

// Set the default character encoding to UTF-8
mb_internal_encoding('UTF-8');