Php 将数组推送到空数组中

我想编写一个函数来获取父对象的子对象

get_children

应该返回

$this_parent\u id

子元素的数组

/* $pages array */

Array
(
    [0] => Pages Object
        (
            [id_page] => 1
            [str_title] => index
            [id_parent] => 0
        )

    [1] => Pages Object
        (
            [id_page] => 10
            [str_title] => download
            [id_parent] => 0
        )

    [2] => Pages Object
        (
            [id_page] => 11
            [str_title] => about us
            [id_parent] => 1
        )

    [3] => Pages Object
        (
            [id_page] => 12
            [str_title] => contact us
            [id_parent] => 1
        )

    [4] => Pages Object
        (
            [id_page] => 13
            [str_title] => members
            [id_parent] => 1
        )

)

我想在条件为true时将子数组推入数组

print_r(get_children(1, $pages));
function get_children($this_parent_id, $family) {
    foreach($family as $page) {
        if ($page->id_parent == $this_parent_id) {
            /* here I need to append $page to $temp_array
        isset($temp_array) ? $temp_array = array($temp_array, (array)$page) : $temp_array = (array)$page; */
        }
    }
    return $temp_array;
}

array\u push（）

是您正在寻找的函数吗

function get_children($this_parent_id, $family) { 
    $temp_array = array(); 
    foreach($family as $page) {
        if ($page->id_parent == $this_parent_id) {
            array_push($temp_array, $page);
        }
    }
    return $temp_array;
}

---

错误可能是因为行中的赋值

isset($temp_array) ? $temp_array = array($temp_array, (array)$page) : $temp_array = (array)$page; 

下面的函数代码应该可以正常工作

function get_children($this_parent_id, $family)
{
   $temp_array = array();
    foreach ($family as $page) {
        if ($page->id_parent == $this_parent_id) {
            array_push($temp_array,$page);
        }
    }
    return $temp_array;
}

---

像

$this\u parent\u id[]=$page

？更改为

isset（$temp\u array）$临时数组[]=（数组）$page:$临时数组=（数组）$page和工作。谢谢@AlvinWongI试过了，但没用
第一个参数应该是
中的数组，而打印时$temp\u array是数组
function get_children($this_parent_id, $family)
{
   $temp_array = array();
    foreach ($family as $page) {
        if ($page->id_parent == $this_parent_id) {
            array_push($temp_array,$page);
        }
    }
    return $temp_array;
}