php 無限級分類
阿新 • • 發佈:2020-09-09
無限級分類
無限級類
<?php Class UnLimitTree { //組合一維陣列 Static Public function unlimitedForLevel($cate, $html = '--', $pid = 0, $level = 0) { $arr = array(); foreach ($cate as $k => $v) { if ($v['pid'] == $pid) { $v['level'] = $level + 1; $v['html'] = str_repeat($html, $level); $arr[] = $v; $arr = array_merge($arr, self::unlimitedForLevel($cate, $html, $v['id'], $level + 1)); } } return $arr; } //組合多維陣列 Static Public function unlimitedForLayer($cate, $name = 'child', $pid = 0) { $arr = array(); foreach ($cate as $v) { if ($v['pid'] == $pid) { $v[$name] = self::unlimitedForLayer($cate, $name, $v['id']); $arr[] = $v; } } return $arr; } //傳遞一個子分類ID返回所有的父級分類 Static Public function getParents($cate, $id) { $arr = array(); foreach ($cate as $v) { if ($v['id'] == $id) { $arr[] = $v; $arr = array_merge(self::getParents($cate, $v['pid']), $arr); } } return $arr; } //傳遞一個父級分類ID返回所有子分類ID Static Public function getChildsId($cate, $pid) { $arr = array(); foreach ($cate as $v) { if ($v['pid'] == $pid) { $arr[] = $v['id']; $arr = array_merge($arr, self::getChildsId($cate, $v['id'])); } } return $arr; } //傳遞一個父級分類ID返回所有子分類 Static Public function getChilds($cate, $pid) { $arr = array(); foreach ($cate as $v) { if ($v['pid'] == $pid) { $arr[] = $v; $arr = array_merge($arr, self::getChilds($cate, $v['id'])); } } return $arr; } }
使用
$cate = array( 0 => array('id' => 1, 'pid' => 0, 'name' => '江西省'), 1 => array('id' => 2, 'pid' => 0, 'name' => '浙江省'), 2 => array('id' => 3, 'pid' => 1, 'name' => '上饒市'), 3 => array('id' => 4, 'pid' => 3, 'name' => '廣豐縣'), 4 => array('id' => 5, 'pid' => 2, 'name' => '杭州市'), 5 => array('id' => 6, 'pid' => 5, 'name' => '西湖'), 6 => array('id' => 7, 'pid' => 6, 'name' => '斷橋'), ); print_r(UnLimitTree ::unlimitedForLevel($cate)); //print_r(UnLimitTree ::unlimitedForLayer($cate)); //print_r(UnLimitTree ::getParents($cate,7)); //print_r(UnLimitTree ::getChildsId($cate,2)); //print_r(UnLimitTree ::getChilds($cate,2));