[英]Check if a key has a value in a multidimensional array with php
I put the result of a SQL request in an array to get something like:我将 SQL 请求的结果放在一个数组中以获得类似:
Array (
[0] => Array ( [id] => 253 [mother_id] => 329 )
[1] => Array ( [id] => 329 [mother_id] => 210 )
[2] => Array ( [id] => 293 [mother_id] => 329 )
[3] => Array ( [id] => 420 [mother_id] => 293 )
)
I want to display in the profil page of the person with the ID 329 a list of her children, so here the ID 253 and 293. There are more values in my array such the name of the person.我想在 ID 为 329 的人的个人资料页面中显示她的孩子的列表,所以这里是 ID 253 和 293。我的数组中有更多值,例如人名。 How can I get the id, name, etc... of every people who have "329" as "mother_id"?
如何获取每个将“329”作为“mother_id”的人的 ID、姓名等?
I think there is something to do with array_key_exists() but I didn't find by myself after many searches.我认为这与 array_key_exists() 有关,但经过多次搜索后我自己没有找到。 Please help:)
请帮忙:)
My code looks like this:我的代码如下所示:
$request = $database->prepare("SELECT * FROM users");
$request->execute();
$result = $request->fetchAll();
print_r($result); // The code above
$usersWithMother = array_filter(
$result,
function (array $user) {
return $user['mother_id'] === 329;
}
);
print_r($userWithMother); // Array ()
array_filter
is your friend: array_filter
是你的朋友:
$usersWithMother = array_filter(
$users,
function (array $user) {
return (int)$user['mother_id'] === 329;
}
);
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