keyFirst()

The keyFirst() method returns first key

Example.php
<?php use kim\present\utils\arrays\ArrayUtils;
​
$arrayUtils = ArrayUtils::from(["Apple" => 0, "Banana" => 1, "Carrot" => 2]);
​
//Gets first key
$arrayUtils->keyFirst();
// expected output: "Apple"
Syntax
$arrayUtils->keyFirst() : int|string|null;
Return value
A first key of array. If array is empty, returns NULL.
Prefixing
ArrayUtils::keyFirstFrom(iterable $from) : int|string|null;
References
PHP: array_key_first - Manual
​

first()

last()

Last modified 2yr ago