<?php

function slugify($value, $transliteration = false)
{
    if (extension_loaded('intl') && $transliteration == true) {
        $transliterator = \Transliterator::create('Any-Latin; Latin-ASCII');
        $value = $transliterator->transliterate($value);
    }

    //
    $str = preg_replace('/\s+/', '-', trim($value)); // Trim and remove spaces
    $str = str_replace('_', '-', $str); // Underscores to dashes
    $str = preg_replace('/[^\pL0-9-]/u', '', strtolower($str)); // Only alpha-numeric and dashes are permitted
    $str = preg_replace('/-+/', '-', $str); // Prevent 2+ dashes from appearing together

    // Don't end in a dash
    if( substr($str, -1, 1) === '-' ){
        $str = substr($str, 0, -1);
    }

    return $str;
}