Traversal output of binary tree array in php FLEA_PHP tutorial

But how to traverse the binary tree array generated by this method? Here's how I do it:

Copy code The code is as follows:

function preTree ($cat){
foreach ($cat as $c){
?>

:

• :

  
  if(isset ($s['childrens'])){
  ?>
  • $this->preTree($s['childrens']);
    ?>
  }
  ?>
  
  

}
}
?>

http://www.bkjia.com/PHPjc/326123.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/326123.htmlTechArticleBut how to traverse the binary tree array generated by this method? Here is how I did it: Copy the code The code is as follows: ?php function preTree($cat){ foreach ($cat as $c){ ? pa href="http...