Sort
Natsort uses a natural order algorithm.
/**
* sort(), natsort()
*/
$A = ['da', 'b', 'c'];
$B = ['10t', '2t', '3t'];
sort($A);
natsort($B);
print_r($A); // b, c, da
print_r($B); // [1] => 2t [2] => 3t [0] => 10t
Filter
Filters elements of an array using a callback function.
declare(strict_types=1);
/**
* array_filter()
*
* Without a callback returns non empty values
*/
$A = [1, 2, 3, 4, 5, 6];
$B = [1, false, null, 'b'];
function odd($var) : int
{
return ($var & 1); // bits set in both
}
function isEven($var) : bool
{
return ! ($var & 1); // bit 1 not set
}
print_r(array_filter($A, 'odd')); // [1, 3. 5]
print_r(array_filter($A, 'isEven')); // [2, 4, 6]
print_r(array_filter($B)); // [0 => 1, 3 => b]
Multisort
Sort multiple or multi-dimensional arrays
/**
* array_multisort()
*
* Sorting destroys all the keys and rearange elements
*/
$A = [3,2,1];
$B = [4,8,0];
array_multisort($A, $B);
print_r($A); // 1, 2, 3
print_r($B); // 0, 8, 4
$C = [
["10", 11, 100, 100, "a"],
[1, 2, "2", 3, 1],
];
array_multisort(
$C[0], SORT_ASC, SORT_STRING,
$C[1], SORT_DESC, SORT_NUMERIC);
print_r($C);
// ["10", 100, 100, 11, "a"]
// [ 1, 3, "2", 2, 1 ]
Last update: 451 days ago
