php - Nested option in select -

i'm making taxonomy system. created recursive function , function display categories in list (<ul>). works fine list, every child element move right...etc...

but need same <select>. here i've done far :

private function _tohtml(&$list, $parent=-1, $pass = 0){     $foundsome = false;     for( $i=0,$c=count($list);$i<$c;$i++ ){         $delay = '';         if( $list[$i]['parent_id']==$parent ){             if( $foundsome==false ){                 $delay .= str_repeat("--", $pass);                 $foundsome = true;             }                 echo '<option value="'. $list[$i]['id'] .'">'. $delay . $list[$i]['name'] .'</option>';             $this->_tohtml($list,$list[$i]['id'],$pass+1);         }     } } 

the problem is, works on first child elment, others kind of not considering @ all. looks :

cinema --english (sub cat cinema) french (also sub cat cinema) 

when expect have :

cinema --english (sub cat cinema) --french (also sub cat cinema) 

any idea?

thanks help

whenever face such problems, more straight forward , forget premature optimization. simplify function reducing nesting , proper naming of variables.

private function _tohtml($list, $parent = -1, $level = 0) {     foreach ($list $entry) {         if ($entry['parent_id'] != $parent) {             continue;         }         printf('<option value="%s">%s%s</option>',             $entry['id'],             str_repeat('--', $level),             $entry['name']         );         $this->_tohtml($list, $entry['id'], $level + 1);     } }