PHP method to generate classification tree array through classification list, classification list array_PHP tutorial

How PHP generates a classification tree array through a classification list, classification list array

The example in this article describes how PHP generates a classification tree array through a classification list. Share it with everyone for your reference. The specific analysis is as follows:

Here $list is a category list array, the key is the category ID, the value is the category node object, and pid is the parent category ID

The php code is as follows:

$tree = array();
foreach ($list as $id => $row) {
 $pid = $row->pid;
 if ($pid == 0) {
  $tree[] = &$list[$id];
 } else if (isset($list[$pid])) {
  $parent = &$list[$pid];
  $parent->children[] = &$list[$id];
  // 增加 children 属性标识子分类列表
 }
}

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/987249.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/987249.htmlTechArticleHow to generate a classification tree array in php through a classification list, a classification list array. This example describes how php generates classifications through a classification list. Tree array methods. Share it with everyone for your reference. Tool...