Disclaimer: Auto generated file. Please help us setting parameters to useful values and extending the examples.

• Combination::combinationsAll(array $set) : \Generator

  /**
       * All combinations of any size, ['a','b'] => [ ['a'], ['b'], ['a','b'] ]
       *   foreach(Combination:cominationsAll([1,2,3]) as $combinationIndex => $combination)
       *
       * @param array $set
       * @return \Generator each combination as an array [ ['a'], ['b'], ['c'], ['a','b'], ['a','c'], ['b','c'], ['a','b','c'] ]
       */
  

  1. echo "<ul>"; foreach(Combination::combinationsAll([['a','b','c']); as $k => $v) echo "<li>$k := ". print_r($v, true)."</li>"; echo "/<ul>";
     • 0 := Array ( [0] => a )
     • 1 := Array ( [0] => b )
     • 2 := Array ( [0] => c )
     • 3 := Array ( [0] => a [1] => b )
     • 4 := Array ( [0] => a [1] => c )
     • 5 := Array ( [0] => b [1] => c )
     • 6 := Array ( [0] => a [1] => b [2] => c )
• Combination::combinations(array $set = [], int $size = 0) : \Generator

  /**
       * All combinations, no duplicates, of size $size in $set as a Generator.
       *  foreach( combinations(['a','b','c'], 2) as $combinationIndex => $combination) =>  each $c is [a,b],[ a,c] and [b,c]
       *
       * @param array $set
       * @param int $size
       * @return \Generator
       */
  

  1. echo "<ul>"; foreach(Combination::combinations(); as $k => $v) echo "<li>$k := ". print_r($v, true)."</li>"; echo "/<ul>";
     • 0 := Array ( )
• Combination::combinationsAllCount(int $setLength) : int

  /**
       * Number of all combinations for $setLength elements
       *
       * @param int $setLength
       * @return int
       */
  

  1. Combination::combinationsAllCount(3); -> 7
• Combination::combinationsCount(int $setLength, int $itemsNumber) : int

  /**
       * Number of combinations of $setLength items grouped in $itemsNumber. considers a,b equal to b,a
       *
       * @param int $setLength
       * @param int $itemsNumber
       * @return int
       */
  

  1. Combination::combinationsCount(3, 3); -> 1