如何使用in_array php函数搜索std对象数组(对象数组)? [英] How to search in array of std object (array of object) using in_array php function?
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问题描述
我有以下std对象数组
I have following std Object array
Array
(
[0] => stdClass Object
(
[id] => 545
)
[1] => stdClass Object
(
[id] => 548
)
[2] => stdClass Object
(
[id] => 550
)
[3] => stdClass Object
(
[id] => 552
)
[4] => stdClass Object
(
[id] => 554
)
)
我想使用循环搜索[id]
键的值.我有以下条件来检查值是否存在,如下所示:
I want to search for value of [id]
key using loop. I have following condition to check whether value is exist or not like below
$flag = 1;
if(!in_array($value->id, ???)) {
$flag = 0;
}
???
我要在哪里搜索std Object的[id]
键的数组.
Where ???
I want to search in array of std Object's [id]
key.
有人可以帮我吗?
推荐答案
如果数组不太大或需要多次执行测试,则可以在数组中映射属性:
If the array isn't too big or the test needs to be performed multiple times, you can map the properties in your array:
$ids = array_map(function($item) {
return $item->id;
}, $array);
然后:
if (!in_array($value->id, $ids)) { ... }
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