PHP数组分级，万般无奈，救助
array (
array("level" => '1', "caption" => "一级菜单1"),
array("leve1" => '1', "caption" => "一级菜单2"),
array("leve1" => '2', "caption" => "二级菜单1"),
array("leve1" => '2', "caption" => "二级菜单2"),
array("leve1" => '1', "caption" => "一级菜单3"),
)
其中level = 2为其上方最近leve1 = 1 的子菜单，不排除会有level = 3的子菜单(从属于level = 2)现在想弄成下面的形式，想了好久也没什么好方法，同事建议我用递归，可递归小弟不太懂，PHP初接触，给各位大拿添麻烦了
array (
array("level" => '1', "caption" => "一级菜单1"),
array("leve1" => '1', "caption" => "一级菜单2",
"sub"=>array("leve1" => '2', "caption" => "二级菜单1"),
"sub"=>array("leve1" => '2', "caption" => "二级菜单2")
),
array("leve1" => '1', "caption" => "一级菜单3"),
)
php?菜单?递归
[解决办法]
你连搜索搜不会，怎么查资料做IT啊？
搜“php 无限分类”
http://bbs.csdn.net/topics/360028778
http://bbs.csdn.net/topics/250025103
http://bbs.csdn.net/topics/320022124
……
你的数组里面
level 相当于 pid（把=1改为=0）
caption 拆分为 id 和 name
照着上面抄吧，先完成了，有空自己再理解人家的递归方法
偶忙着做其他事情
[解决办法]
参考下我写的
<?
$arr = array(
array('id'=>1,'city_name'=>'中国','rel_id'=>'1','pid'=>0),
array('id'=>2,'city_name'=>'广东','rel_id'=>'1-2','pid'=>1),
array('id'=>3,'city_name'=>'深圳','rel_id'=>'1-2-3','pid'=>2),
array('id'=>4,'city_name'=>'广州','rel_id'=>'1-2-4','pid'=>2)
);
function find_subclass( $pid ){
global $arr;
$__arr = array();
foreach ( $arr as $k=>$v )
{
if( $v['pid']==$pid )$__arr[] = $v;
}
return $__arr;
}
function tree_subclass($pid=0){
$__arr = array();
$__arr = find_subclass($pid);
if( !empty($__arr) ){
foreach ( $__arr as $k=>$v )
{
$__arr[$k]['subclass'] = tree_subclass($v['id']);
}
}
return $__arr;
}
var_dump(tree_subclass(0));
?>
<?php
$data = array (
array("level" => '1', "caption" => "一级菜单1"),
array("level" => '1', "caption" => "一级菜单2"),
array("level" => '2', "caption" => "二级菜单1"),
array("level" => '2', "caption" => "二级菜单2"),
array("level" => '3', "caption" => "三级菜单1"),
array("level" => '1', "caption" => "一级菜单3"),
);
$last = array(0=>array());
foreach($data as $k=>&$v){
$v['level'] = (int)$v['level'];
$last = array_slice($last, 0, $v['level']);
$last[$v['level']] = &$v;
$last[$v['level']-1]['sub'][] = &$last[$v['level']];
}
var_dump( $last[0]);
$ar = array (Array
array("level" => '1', "caption" => "一级菜单1"),
array("level" => '1', "caption" => "一级菜单2"),
array("level" => '2', "caption" => "二级菜单1"),
array("level" => '2', "caption" => "二级菜单2"),
array("level" => '3', "caption" => "三级菜单1"),
array("level" => '1', "caption" => "一级菜单3"),
);
print_r( foo($ar));
function foo(&$ar, $level='1') {
$res = array();
while($r = current($ar)) {
if($r['level'] > $level) $res[count($res)-1]['sub'] = foo($ar, $r['level']);
elseif($r['level'] == $level) $res[] = $r;
else {
array_unshift($ar, $r);
break;
}
array_shift($ar);
}
return $res;
}
[1] => Array
(
[level] => 1
[caption] => 一级菜单2
[sub] => Array
(
[0] => Array
(
[level] => 2
[caption] => 二级菜单1
)
[1] => Array
(
[level] => 2
[caption] => 二级菜单2
[sub] => Array
(
[0] => Array
(
[level] => 3
[caption] => 三级菜单1
)
)
)
)
)
[2] => Array
(
[level] => 1
[caption] => 一级菜单3
)
)
