数组代码如下:
<?php
$items = array(
array(
'id' => 1,
'pid' => 0,
'name' => '一级11'
) ,
array(
'id' => 11,
'pid' => 0,
'name' => '一级12'
) ,
array(
'id' => 2,
'pid' => 1,
'name' => '二级21'
) ,
array(
'id' => 10,
'pid' => 11,
'name' => '二级22'
) ,
array(
'id' => 3,
'pid' => 1,
'name' => '二级23'
) ,
array(
'id' => 12,
'pid' => 11,
'name' => '二级24'
) ,
array(
'id' => 13,
'pid' => 12,
'name' => '三级31'
) ,
array(
'id' => 9,
'pid' => 1,
'name' => '二级25'
) ,
);
?>函数代码如下:
<?php
function formatTree($array, $pid = 0) {
$arr = array();
$tem = array();
foreach ($array as $v) {
if ($v['pid'] == $pid) {
$tem = formatTree($array, $v['id']);
//判断是否存在子数组
$tem && $v['son'] = $tem;
$arr[] = $v;
}
}
return $arr;
}
?>其中,数组一定要包含id和pid用以指定数组值之间的层级关系.
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