indexOf()

The indexOf() method get first index at which a given element can be found in the array

Example.php

<?php use kim\present\utils\arrays\ArrayUtils;

$arrayUtils = ArrayUtils::from(["Apple", "Banana", "Carrot"]);

//Check array includes "Banana"
$arrayUtils->indexOf("Banana");
// expected output: 1

//Check array includes "Carrot" from 2
$arrayUtils->indexOf("Banana");
// expected output: null

//Check array includes "Baccon"
$arrayUtils->indexOf("Baccon");
// expected output: null

Syntax

$arrayUtils->indexOf(mixed $needle, int $start = 0) : int|string|null;

Parameter

• $needle

  • The value to search for.

• $start

  • The position in this array at which to begin searching for valueToFind.

  • Defaults to 0.

Return value

• The first index of the element in the array. If not founded, returns NULL.

Prefixing

ArrayUtils::indexOfFrom(iterable $from, mixed $needle, int $start = 0) : int|string|null;

References

https://www.php.net/manual/en/function.array-chunk