PHP 数组
#原数组$list = array( 0=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a1'), 1=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a2'), 2=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a3'), 3=>array('mid'=>2,'menu'=>'m2','level'=>1,'belong'=>0,'higher'=>' '), 4=>array('mid'=>3,'menu'=>'m3','level'=>1,'belong'=>0,'higher'=>' '), 5=>array('mid'=>4,'menu'=>'m4','level'=>1,'belong'=>0,'higher'=>'d1'), 6=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e1'), 7=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e2') );#从原数组中提取新数组$menuArr = array( 0=>array('mid'=>1,'main'=>'m1','child'=>array('a1','a2','a3') ), 1=>array('mid'=>2,'main'=>'m2','child'=>' ', 2=>array('mid'=>3,'main'=>'m3','child'=>' ', 3=>array('mid'=>4,'main'=>'m4','child'=>array('d1') ), 4=>array('mid'=>5,'main'=>'m5','child'=>array('e1','e2') ),);#自己搞半天搞晕了：$sign = null;$n = 0;$menuArr = array();foreach($list as $men){ if($sign == $men['mid']){ echo "n:{$n}
"; $menuArr[$men['mid']]['main'] = $men['menu']; $menuArr[$men['mid']]['child'][$n] = $men['higher']; #提示这里不可解析 //array_push($menuArr[$men['mid']]['child'], $men['higher']); $n++; }else{ $n = 0; $menuArr[$men['mid']]['main'] = $men['menu']; $menuArr[$men['mid']]['child'] = $men['higher']; } $sign = $men['mid'];}print_r($menuArr);#帮帮忙…… 回复讨论(解决方案)
$list = array( 0=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a1'), 1=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a2'), 2=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a3'), 3=>array('mid'=>2,'menu'=>'m2','level'=>1,'belong'=>0,'higher'=>' '), 4=>array('mid'=>3,'menu'=>'m3','level'=>1,'belong'=>0,'higher'=>' '), 5=>array('mid'=>4,'menu'=>'m4','level'=>1,'belong'=>0,'higher'=>'d1'), 6=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e1'), 7=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e2') );$menuArr = array();foreach($list as $v) { if(! isset($menuArr[$v['mid']])) $menuArr[$v['mid']] = array('mid' => $v['mid'], 'main' => $v['menu'], 'child' => array($v['higher'])); else $menuArr[$v['mid']]['child'][] = $v['higher'];}$menuArr = array_values($menuArr);print_r($menuArr);Array (
[0] => Array
(
[mid] => 1
[main] => m1
[child] => Array
(
[0] => a1
[1] => a2
[2] => a3
)
)
[1] => Array
(
[mid] => 2
[main] => m2
[child] => Array
(
[0] =>
)
)
[2] => Array
(
[mid] => 3
[main] => m3
[child] => Array
(
[0] =>
)
)
[3] => Array
(
[mid] => 4
[main] => m4
[child] => Array
(
[0] => d1
)
)
[4] => Array
(
[mid] => 5
[main] => m5
[child] => Array
(
[0] => e1
[1] => e2
)
)
)
为什么你的第6行
else $menuArr[$v['mid']]['child'][] = $v['higher'];}没有报错？
我的这样写
$menuArr[$men['mid']]['child'][] = $men['higher'];
提示：Fatal error: [] operator not supported for strings？
为什么你的第6行
else $menuArr[$v['mid']]['child'][] = $v['higher'];}没有报错？
我的这样写
$menuArr[$men['mid']]['child'][] = $men['higher'];
提示：Fatal error: [] operator not supported for strings？
不明白你$sign == $men['mid']的作用,$men['mid']都不可能是空。
用你的代码改了一下，可以了。
#原数组$list = array( 0=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a1'), 1=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a2'), 2=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a3'), 3=>array('mid'=>2,'menu'=>'m2','level'=>1,'belong'=>0,'higher'=>' '), 4=>array('mid'=>3,'menu'=>'m3','level'=>1,'belong'=>0,'higher'=>' '), 5=>array('mid'=>4,'menu'=>'m4','level'=>1,'belong'=>0,'higher'=>'d1'), 6=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e1'), 7=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e2') );$menuArr = array();foreach($list as $men){ if(!isset($menuArr[$men['mid']])){ $menuArr[$men['mid']]['mid'] = $men['mid']; $menuArr[$men['mid']]['main'] = $men['menu']; $menuArr[$men['mid']]['child'] = array($men['higher']); #提示这里不可解析 }else{ array_push($menuArr[$men['mid']]['child'],$men['higher']); }}$menuArr = array_values($menuArr);echo '';print_r($menuArr);echo '
'; 不明白你$sign == $men['mid']的作用,$men['mid']都不可能是空。
没有说$men['mid']值是空，在我的代码的寓意是指当数组中$men['mid']的值相同时执行...
<?php#原数组$list = array( 0=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a1'), 1=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a2'), 2=>array('mid'=>1,'menu'=>'m1','level'=>1,'belong'=>0,'higher'=>'a3'), 3=>array('mid'=>2,'menu'=>'m2','level'=>1,'belong'=>0,'higher'=>' '), 4=>array('mid'=>3,'menu'=>'m3','level'=>1,'belong'=>0,'higher'=>' '), 5=>array('mid'=>4,'menu'=>'m4','level'=>1,'belong'=>0,'higher'=>'d1'), 6=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e1'), 7=>array('mid'=>5,'menu'=>'m5','level'=>1,'belong'=>0,'higher'=>'e2') );#从原数组中提取新数组$menuArr = array( 0=>array('mid'=>1,'main'=>'m1','child'=>array('a1','a2','a3') ), 1=>array('mid'=>2,'main'=>'m2','child'=>' '), 2=>array('mid'=>3,'main'=>'m3','child'=>' '), 3=>array('mid'=>4,'main'=>'m4','child'=>array('d1') ), 4=>array('mid'=>5,'main'=>'m5','child'=>array('e1','e2') ));#自己搞半天搞晕了：$sign = null;$n = 0; $menuArr = array();foreach($list as $men){ if($sign == $men['mid']){ echo "n:{$n}
"; $menuArr[$men['mid']]['main'] = $men['menu']; // index = 1时， $menuArr[$men['mid']]['child'] = 'a1', 一个字符串当作数组用你说能不出错么？ $menuArr[$men['mid']]['child'][$n] = $men['higher']; #提示这里不可解析 //array_push($menuArr[$men['mid']]['child'], $men['higher']); $n++; }else{ $n = 1; $menuArr[$men['mid']]['main'] = $men['menu']; // index = 0时， $menuArr[$men['mid']]['child'] = 'a1' //$menuArr[$men['mid']]['child'] = $men['higher']; $menuArr[$men['mid']]['child'] = $men['higher'] != ' ' ? array($men['higher']) : ''; } $sign = $men['mid'];}print_r($menuArr);#帮帮忙…… $menuArr[$men['mid']]['child'] = $men['higher'];
后，$menuArr[$men['mid']]['child'] 是字符串
你再当做数组操作
$menuArr[$men['mid']]['child'][$n] = $men['higher'];
当然要报错
原来这样啊，看来最近真的晕头了，O(∩_∩)O谢谢帮忙。