sortKey()

The sortKey() method sort an array by keys using a function or default sort function

Example.php
<?php use kim\present\utils\arrays\ArrayUtils;
​
$arrayUtils = ArrayUtils::from([
    "orange" => 1, 
    "banana" => 2, 
    "apple" => 3,
    "raspberry" => 4, 
    "kiwi" => 5]);
​
​
$arrayUtils->sortKey();
// expected output: [
//  "apple" => 3,
//  "banana" => 2, 
//  "kiwi" => 5,
//  "orange" => 1, 
//  "raspberry" => 4
//]
​
$arrayUtils->sortKey(function($a, $b){ return strcmp($a, $b) * -1; })
// expected output: [
//  "raspberry" => 4,
//  "orange" => 1, 
//  "kiwi" => 5,
//  "banana" => 2, 
//  "apple" => 3
//]
Syntax
$arrayUtils->sortKey(?callable $callback = null) : ArrayUtils;
Parameter
$callback 
 
A function to compare element for sort, taking two arguments:
$a The comparison target A
$b The comparison target B
Default is NULL, If is null, Sort by default sort function.
Return value
A sorted array.
Prefixing
$arrayUtils->sortKeyAs(?callable $callback = null) : array;
ArrayUtils::sortKeyFrom(iterable $from, ?callable $callback = null) : ArrayUtils;
ArrayUtils::sortKeyFromAs(iterable $from, ?callable $callback = null) : array;
References
PHP: ksort - Manual
PHP: uksort - Manual

sort()

unique()

Last modified 2yr ago