<?php
$data = [
['alteration1', 'alteration4',],
['alteration2','alteration3'],
['alteration2','alteration3'],
[]
];
$combinations = [[]];
foreach($data as $index => $current_data){
$current_data = array_unique($current_data);
if(empty($current_data)) continue;
$temp_combinations = [];
foreach($current_data as $value){
foreach($combinations as $each_combination){
$temp_combinations[] = array_merge($each_combination,[$value]);
}
}
$combinations = $temp_combinations;
}
$set = [];
$unique_combinations = [];
foreach($combinations as $each_combination){
natsort($each_combination);
$serialized_form = implode(",",$each_combination);
if(isset($set[$serialized_form])) continue;
if(empty($each_combination)) continue;
$unique_combinations[] = $each_combination;
$set[$serialized_form] = true;
}
print_r($unique_combinations);
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
- Array
(
[0] => Array
(
[0] => alteration1
[1] => alteration2
[2] => alteration2
)
[1] => Array
(
[1] => alteration2
[2] => alteration2
[0] => alteration4
)
[2] => Array
(
[0] => alteration1
[2] => alteration2
[1] => alteration3
)
[3] => Array
(
[2] => alteration2
[1] => alteration3
[0] => alteration4
)
[4] => Array
(
[0] => alteration1
[1] => alteration3
[2] => alteration3
)
[5] => Array
(
[1] => alteration3
[2] => alteration3
[0] => alteration4
)
)
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Array
(
[0] => Array
(
[0] => alteration1
[1] => alteration2
[2] => alteration2
)
[1] => Array
(
[1] => alteration2
[2] => alteration2
[0] => alteration4
)
[2] => Array
(
[0] => alteration1
[2] => alteration2
[1] => alteration3
)
[3] => Array
(
[2] => alteration2
[1] => alteration3
[0] => alteration4
)
[4] => Array
(
[0] => alteration1
[1] => alteration3
[2] => alteration3
)
[5] => Array
(
[1] => alteration3
[2] => alteration3
[0] => alteration4
)
)
- Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
- Array
(
[0] => Array
(
[0] => alteration1
[1] => alteration2
[2] => alteration2
)
[1] => Array
(
[2] => alteration2
[1] => alteration2
[0] => alteration4
)
[2] => Array
(
[0] => alteration1
[2] => alteration2
[1] => alteration3
)
[3] => Array
(
[2] => alteration2
[1] => alteration3
[0] => alteration4
)
[4] => Array
(
[0] => alteration1
[1] => alteration3
[2] => alteration3
)
[5] => Array
(
[2] => alteration3
[1] => alteration3
[0] => alteration4
)
)
preferences:
174.33 ms | 404 KiB | 182 Q