A PHP class that intercepts strings between specified strings

class get_c_str { var $str; var $start_str; var $end_str; var $start_pos; var $end_pos; var $c_str_l; var $contents; function get_str($str,$start_str,$end_str){ $this->str = $str; $this->start_str = $start_str; $this->end_str = $end_str; $this->start_pos = strpos($this->str,$this->start_str)+strlen($this->start_str); $this->end_pos = strpos($this->str,$this->end_str); $this->c_str_l = $this->end_pos - $this->start_pos; $this->contents = substr($this->str,$this->start_pos,$this->c_str_l); return $this->contents; } }?>

 get_str('[123456789]','[',']'); ?>