php utf8去除Bom头

源代码

去除Bom头
     /**
     * 去掉UTF-8 Bom头。
     * Remove UTF-8 Bom.
     * 
     * @param  string    $string
     * @access public
     * @return string
     */
    public static function removeUTF8Bom($string)
    {
        if(substr($string, 0, 3) == pack('CCC', 239, 187, 191)) return substr($string, 3);
        return $string;
    }