请问如何将多维数组转换为二维数组？

回复讨论(解决方案)

建议举例说明，这样清晰明了。

$a = array(  0=>array(    'categoryid'=>1,    'name'=>"AA1",    'parent'=>0,    'childs'=>array(      0=>array(        'categoryid'=>2,        'name'=>"BB1",        'parent'=>1,        'childs'=>array(          0=>array(            'categoryid'=>3,            'name'=>"CC",            'parent'=>2,            'childs'=>array(              0=>array(                'categoryid'=>4,                'name'=>"dd1",                'parent'=>3,              ),              1=>array(                'categoryid'=>5,                'name'=>"dd2",                'parent'=>3,              ),            ),          ),        ),      ),      1=>array(        'categoryid'=>6,        'name'=>"BB2",        'parent'=>1,      ),    ),  ),  1=>array(    'categoryid'=>7,    'name'=>"AA2",    'parent'=>0,  ));function imp($tree, $children='childs') {  $imparr = array();  foreach($tree as $w) {    if(isset($w[$children])) {      $t = $w[$children];      unset($w[$children]);      $imparr[] = $w;      if(is_array($t)) $imparr = array_merge($imparr, imp($t, $children));    } else {      $imparr[] = $w;    }  }  return $imparr;}print_r(imp($a));

Array(    [0] => Array        (            [categoryid] => 1            [name] => AA1            [parent] => 0        )    [1] => Array        (            [categoryid] => 2            [name] => BB1            [parent] => 1        )    [2] => Array        (            [categoryid] => 3            [name] => CC            [parent] => 2        )    [3] => Array        (            [categoryid] => 4            [name] => dd1            [parent] => 3        )    [4] => Array        (            [categoryid] => 5            [name] => dd2            [parent] => 3        )    [5] => Array        (            [categoryid] => 6            [name] => BB2            [parent] => 1        )    [6] => Array        (            [categoryid] => 7            [name] => AA2            [parent] => 0        ))

重新组装一次就可以。

进行数组的重新拼接。

function imp($tree, $children='childs') {  $imparr = array();  foreach($tree as $w) {    if(isset($w[$children])) {      $t = $w[$children];      unset($w[$children]);      $imparr[] = $w;      if(is_array($t)) $imparr = array_merge($imparr, imp($t, $children));    } else {      $imparr[] = $w;    }  }  return $imparr;}print_r(imp($a));

Array(

array(2) {  ["0childs"] => array(9) {    ["cate_id"] => string(1) "5"    ["cate_title"] => string(12) "古剑奇谭"    ["cate_pid"] => string(1) "0"    ["cate_type"] => string(7) "Article"    ["cate_type2"] => NULL    ["cate_sort"] => string(1) "1"    ["0childs"] => array(6) {      ["cate_id"] => string(1) "7"      ["cate_title"] => string(12) "百里屠苏"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "2"    }    ["1childs"] => array(6) {      ["cate_id"] => string(1) "8"      ["cate_title"] => string(6) "晴雪"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "5"    }    ["2childs"] => array(6) {      ["cate_id"] => string(1) "9"      ["cate_title"] => string(6) "少恭"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "6"    }  }  ["1childs"] => array(9) {    ["cate_id"] => string(2) "10"    ["cate_title"] => string(12) "天龙八部"    ["cate_pid"] => string(1) "0"    ["cate_type"] => string(7) "Article"    ["cate_type2"] => NULL    ["cate_sort"] => string(1) "2"    ["0childs"] => array(6) {      ["cate_id"] => string(2) "11"      ["cate_title"] => string(6) "萧峰"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "2"    }    ["1childs"] => array(6) {      ["cate_id"] => string(2) "12"      ["cate_title"] => string(6) "虚竹"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "3"    }    ["2childs"] => array(6) {      ["cate_id"] => string(2) "13"      ["cate_title"] => string(9) "慕容复"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "4"    }  }}

我擦，楼上的写错了~~还不能删除。。。
下面这个是我现在的。

array(2) {  [0] => array(9) {    ["cate_id"] => string(1) "5"    ["cate_title"] => string(12) "古剑奇谭"    ["cate_pid"] => string(1) "0"    ["cate_type"] => string(7) "Article"    ["cate_type2"] => NULL    ["cate_sort"] => string(1) "1"    [0] => array(6) {      ["cate_id"] => string(1) "7"      ["cate_title"] => string(12) "百里屠苏"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "2"    }    [1] => array(6) {      ["cate_id"] => string(1) "8"      ["cate_title"] => string(6) "晴雪"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "5"    }    [2] => array(6) {      ["cate_id"] => string(1) "9"      ["cate_title"] => string(6) "少恭"      ["cate_pid"] => string(1) "5"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "6"    }  }  [1] => array(9) {    ["cate_id"] => string(2) "10"    ["cate_title"] => string(12) "天龙八部"    ["cate_pid"] => string(1) "0"    ["cate_type"] => string(7) "Article"    ["cate_type2"] => NULL    ["cate_sort"] => string(1) "2"    [0] => array(6) {      ["cate_id"] => string(2) "11"      ["cate_title"] => string(6) "萧峰"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "2"    }    [1] => array(6) {      ["cate_id"] => string(2) "12"      ["cate_title"] => string(6) "虚竹"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "3"    }    [2] => array(6) {      ["cate_id"] => string(2) "13"      ["cate_title"] => string(9) "慕容复"      ["cate_pid"] => string(2) "10"      ["cate_type"] => string(7) "Article"      ["cate_type2"] => NULL      ["cate_sort"] => string(1) "4"    }  }}

不一样是遍历吗？只是麻烦点，发现是数组就递归进入

如果想要具体代码，就请贴出 var_export 的结果

我只看看就可以了。
$a=array(
array('bbcc',array('ddd','ccc'))
,'aaa'
);
class getOneAr{
var $b;
function getvalue($a){
foreach($a as $v){
if(is_array($v)){
$this->getvalue($v);
}else{
$this->b[]=$v;
}
}
return $this->b;
}
}
$c=new getOneAr();
$b=$c->getvalue($a);
var_dump($b);
?>