filter()

The filter() method creates a new array with all elements that pass the function.

Example.php

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

$arrayUtils = ArrayUtils::from(range(1, 10));

//Filtering values ​​between 3 and 6
$arrayUtils->filter(function($num){ return $num < 3 || $num > 6; });
// expected output: [1, 2, 7, 8, 9, 10]

Syntax

$arrayUtils->filter(callable $callback) : ArrayUtils;

Parameter

• $callback

  A function to test each element of the array. Return a value that coerces to TRUE to keep the element, or to FALSE otherwise. Function taking three 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

• A filtered array.

Prefixing

$arrayUtils->filterAs(callable $callback) : array;

ArrayUtils::filterFrom(iterable $from, callable $callback) : ArrayUtils;

ArrayUtils::filterFromAs(iterable $from, callable $callback) : array;

References

PHP: array_filter - Manual

Array.prototype.filter() - JavaScript | MDN