PHP code example of phpexperts / combinatorics

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

phpexperts / combinatorics example snippets

$generator = new CombinationsGenerator();

foreach ($generator->generate($styles) as $combination) {
    // If you can do what you need to do with the combinations here, without immediately storing
    // them into an array, then your memory usage will never exceed the amount needed store one 
    // combination.
}

Level 1: Generating combinations for A
[
  Number of possibilities => 2
  Time (ms)               => 0.051975250244141
  Time (s)                => 5.1975250244141E-5
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 2: Generating combinations for A, B
[
  Number of possibilities => 4
  Time (ms)               => 0.047922134399414
  Time (s)                => 4.7922134399414E-5
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 3: Generating combinations for A, B, C
[
  Number of possibilities => 15
  Time (ms)               => 0.22578239440918
  Time (s)                => 0.00022578239440918
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 4: Generating combinations for A, B, C, D
[
  Number of possibilities => 64
  Time (ms)               => 1.0910034179688
  Time (s)                => 0.0010910034179688
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 5: Generating combinations for A, B, C, D, E
[
  Number of possibilities => 325
  Time (ms)               => 6.5748691558838
  Time (s)                => 0.0065748691558838
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 6: Generating combinations for A, B, C, D, E, F
[
  Number of possibilities => 1956
  Time (ms)               => 47.721147537231
  Time (s)                => 0.047721147537231
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 7: Generating combinations for A, B, C, D, E, F, G
[
  Number of possibilities => 13699
  Time (ms)               => 395.29585838318
  Time (s)                => 0.39529585838318
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 8: Generating combinations for A, B, C, D, E, F, G, H
[
  Number of possibilities => 109600
  Time (ms)               => 3834.4430923462
  Time (s)                => 3.8344430923462
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]
Level 9: Generating combinations for A, B, C, D, E, F, G, H, I
[
  Number of possibilities => 986409
  Time (ms)               => 37884.353876114
  Time (s)                => 37.884353876114
  Memory consumed         => 320
  Peak Memory (Diff)      => 0
]
Level 10: Generating combinations for A, B, C, D, E, F, G, H, I, J
[
  Number of possibilities => 9864100
  Time (ms)               => 422606.03785515
  Time (s)                => 422.60603785515
  Memory consumed         => 0
  Peak Memory (Diff)      => 0
]