Lets say, I have an array like this:
$arr = array('M', '38', '37', '3XL', 'XL', '39', 'L', 'S', '36', '41', '40', 'XXL');
(its array with available sizes of shoes for current item that customer is going to order)
How to sort it ascending (first alpha-sizes: S, M, L, XL, XXL, 3XL; and then numeric-sizes: 36, 37, 38, 39, 40, 41), so I will get array:
$res = array('S', 'M', 'L', 'XL', 'XXL', '3XL', '36', '37', '38', '39', '40', '41');
Is there some function to do that?
If sizes are all defined, then you can have a $baseArr containing all valid sizes and sort the current arr based on that
function sortSizeArr($arr) {
$baseArr = array('S', 'M', 'L', 'XL', 'XXL', '3XL', '36', '37', '38', '39', '40', '41');
$sortedArr = array();
for($i = 0; $i < count($baseArr); $i++) {
if(in_array($baseArr[$i], $arr))
array_push($sortedArr, $baseArr[$i]);
}
return $sortedArr;
}
Test:
$sizes = array('M', '38', 'S', '36', '41', '40', 'XXL');
print_r(sortSizeArr($sizes));
Array ( [0] => S [1] => M [2] => XXL [3] => 36 [4] => 38 [5] => 40 [6] => 41 )
EDITED by Legionar:
I am calling this function, only if there are alpha-sizes, without numerical-sizes. Some sizes are f.e. M/5, L/6, XL/7, XXL/8, so I changed little bit your function. This helped me, thanks:
function sortSizeArr($arr) {
$baseArr = array('XXS', 'XS', 'S', 'M', 'L', 'XL', 'XXL', 'XXXL', '3XL');
$sortedArr = array();
for ($i = 0; $i < count($baseArr); $i++) {
/*if (in_array($baseArr[$i], $arr)) {
array_push($sortedArr, $baseArr[$i]);
}*/
foreach ($arr as $val) {
$check = reset(explode('/', $val));
if (strpos($val, $baseArr[$i]) === 0) {
array_push($sortedArr, $val);
}
}
}
return $sortedArr;
}
$baseArr use the passed array.Have a look at the function usort():
http://php.net/manual/en/function.usort.php
It allows you to sort an array using a custom compare function. Implementing this function should be rather straightforward for your case.
Here is another example for sort array alphabetically then numerically:
<?php
$array = array('M', '38', '37', '3XL', 'XL', '39', 'L', 'S', '36', '41', '40', 'XXL');
foreach ($array as $key => $value) {
if (ctype_digit($value)) {
$array[$key] = intval($value);
}
}
sort($array);
echo "After Sorting".'<pre>';
print_r($array);
echo '</pre>';
?>
For your reference and output Click Here
'S', 'M', 'L', 'XL', 'XXL', '3XL', no?If you need the numeric sizes to be anything you can do something like:
function size_sort($a, $b) {
return determine_value($a) < determine_value($b) ? -1 : 1;
}
function determine_value($var) {
$letter_sizes = array("S" => 1, "M" => 2, "L" => 3, "XL" => 4, "XXL" => 5, "3XL" => 6);
if(array_key_exists($var, $letter_sizes))
return $letter_sizes[$var];
elseif(is_numeric($var))
return $var + 100; // add 100 so its value is higher than any letter sizing
else
return 10000; // unknown size, make sure it is at the end
}
usort($arr, "size_sort");
I added an else condition incase any letter sizes are left out (ie, XS, 4XL, etc)
To add variant. with only suggestion that sizes nore than 7:
$arr = array('M', '38', '37', '3XL', 'XL', '39', 'L', 'S', '36', '41', '40', 'XXL');
$sizes = array('S', 'M', 'L', 'XL', 'XXL', '3XL');
var_export($arr);
usort($arr, function ($a, $b){
global $sizes;
$a = is_numeric($a) ? $a : array_search($a, $sizes);
$b = is_numeric($b) ? $b : array_search($b, $sizes);
return $a-$b;
});
var_export($arr);
array_search() can return 0 or false which will be compared equally.
array([s] => 36)