<?php

/*
 * This file is part of Flarum.
 *
 * For detailed copyright and license information, please view the
 * LICENSE file that was distributed with this source code.
 */

namespace Flarum\Util;

class Str
{
    /**
     * Create a slug out of the given string.
     *
     * Non-alphanumeric characters are converted to hyphens.
     *
     * @param string $str
     * @return string
     */
    public static function slug($str)
    {
        $str = strtolower($str);
        $str = preg_replace('/[^a-z0-9]/i', '-', $str);
        $str = preg_replace('/-+/', '-', $str);
        $str = preg_replace('/-$|^-/', '', $str);

        return $str;
    }
}
