在阵列搜索 [英] Search in Array

问题描述

我有一个这样的数组：

[0] => Array(
    [student_id] => 6
    [gender] => 1
    [student_name] => name1
)

[1] => Array(
    [student_id] => 26
    [gender] => 2
    [student_name] => name2
)

[2] => Array(
    [student_id] => 75
    [gender] => 2
    [student_name] => name3
)

[3] => Array(
    [student_id] => 1
    [gender] => 1
    [student_name] => name4
)

[4] => Array(
    [student_id] => 10
    [gender] => 1
    [student_name] => name5
)

我想列出的学生姓名或数组键，其中性别是 2 。

什么是实现这一目标的最有效方法是什么？

What is the most efficient way to achieve this?

避免的foreach应该会更好。

Avoiding foreach should be better.

推荐答案

您可以使用 array_filter 过滤数组。

You could use array_filter to filter the array.

$students = array_filter($students, function($var) {
    return $var['gender'] === 2;
});

如果你想收集的名称为一个数组，有 array_map

And if you want to collect the names as an array, there is array_map:

$names = array_map(function($var) {
    return $var['student_name'];
}, $students);

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