arrayutils
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  • Syntax
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  1. 📖Methods
  2. âš¡Generic method
  3. first()

keyFirst()

The keyFirst() method returns first key

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Last updated 4 years ago

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
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