findIndex()

The findIndex() method all similar to find(), but return index

Example.php

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

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

//Find value's index ​​starting with B
$arrayUtils->findIndex(function($name){ return $name[0] === "B"; });
// expected output: 1

Syntax

$arrayUtils->find(callable $callback) : mixed;

Parameter

• $callback

  A function to execute on each value in the array, taking 3 arguments:

  • $value The current element being processed in the array.

  • $key The index of the current element being processed in the array.

  • $array The array every was called upon.

Return value

• The key of the first element in the array that pass function. Otherwise, NULL is returned.

Prefixing

ArrayUtils::findFrom(iterable $from, callable $callback) : mixed;

References

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