数组重组
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}<br>";
$menuArr[$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……
$list = array(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);
)
[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
)
)
)
[解决办法]
<?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}<br>";
$menuArr[$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……