-function get_bb_tag_pos($s, $name, $occurance = 1) {
-
- if($occurance < 1)
- $occurance = 1;
-
- $start_open = -1;
- for($i = 1; $i <= $occurance; $i++) {
- if( $start_open !== false)
- $start_open = strpos($s, '[' . $name, $start_open + 1); // allow [name= type tags
- }
-
- if( $start_open === false)
- return false;
-
- $start_equal = strpos($s, '=', $start_open);
- $start_close = strpos($s, ']', $start_open);
-
- if( $start_close === false)
- return false;
-
- $start_close++;
-
- $end_open = strpos($s, '[/' . $name . ']', $start_close);
-
- if( $end_open === false)
- return false;
-
- $res = array( 'start' => array('open' => $start_open, 'close' => $start_close),
- 'end' => array('open' => $end_open, 'close' => $end_open + strlen('[/' . $name . ']')) );
- if( $start_equal !== false)
- $res['start']['equal'] = $start_equal + 1;
-
- return $res;
-}
-
-function bb_tag_preg_replace($pattern, $replace, $name, $s) {
-
- $string = $s;
-
- $occurance = 1;
- $pos = get_bb_tag_pos($string, $name, $occurance);
- while($pos !== false && $occurance < 1000) {
-
- $start = substr($string, 0, $pos['start']['open']);
- $subject = substr($string, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
- $end = substr($string, $pos['end']['close']);
- if($end === false)
- $end = '';
-
- $subject = preg_replace($pattern, $replace, $subject);
- $string = $start . $subject . $end;
-
- $occurance++;
- $pos = get_bb_tag_pos($string, $name, $occurance);
- }
-
- return $string;
-}
-