PHP: Better URLs and slugs

better_slug.php

<?php
/**
 * From "That is a nice and cool title!" to "that-is-a-nice-and-cool-title"
 */
function betterSlug($text, $strict = false) 
{

	$text = html_entity_decode($text, ENT_QUOTES, 'UTF-8');
		
        // replace non letter or digits by -
        $text = preg_replace('~[^\\pL\d.]+~u', '-', $text);

        // trim
        $text = trim($text, '-');
        setlocale(LC_CTYPE, 'en_GB.utf8');
		
        // transliterate
        if (function_exists('iconv')) {
           $text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
        }

        // lowercase
        $text = strtolower($text);
		
        // remove unwanted characters
        $text = preg_replace('~[^-\w.]+~', '', $text);
		
        if (empty($text)) {
           return 'empty_$';
        }
		
        if ($strict) {
            $text = str_replace(".", "_", $text);
        }
        
        return $text;
}