PHP有一个方法将带有对象的数组转换为具有对象的给定方法输出的数组吗？

Question

I will try to explain what I want to accomplish with this method using an example:

You have an objectPerson with the method getName() which returns PersonName.

Converting [PersonA, PersonB] into [PersonNameA, PersonNameB].

I know PHP has a method array_column to reach this with properties. But I am wondering if there is also a method to do this with objects' methods.

Answer 1

To expand on the usage of array_map() that @axiax mentioned in his comment, you might feed it a closure for a first argument like this:

<?php

class Person
{
    private $name;

    public function setName($name)
    {
        $this->name = $name;
    }

    public function getName()
    {
        return $this->name;
    }
}

$personA = new Person();
$personB = new Person();

$personA->setName('bob');
$personB->setName('alice');

$objects = [
    $personA,
    $personB
];

$names = array_map(
    function(Person $p) {
        return $p->getName();
    },
    $objects
);

var_dump($names); // ['bob', 'alice']