Display possible combinations of string

Question

I am trying to take a string and display the possible combinations of it (in PHP), but while saying in order of each word. For example: \"how are you\" would return (an arra

Answer 1

Answer for question PHP array combination with out back order. There it was necessary to obtain all possible combinations of array elements and store the following.

 push it to result
            // find right position {
            $thisCount = count($currentElementArr);
            $indexFrom = 0;
            $indexToInsert = 0;

            // find range of indexes with current count of elements {
            foreach ($arrResult as $arrResultKey => $arrResultValue) {
                $indexToInsert = $arrResultKey + 1;
                if ($thisCount > count($arrResultValue)) {
                    $indexFrom = $indexToInsert;
                }
                if ($thisCount < count($arrResultValue)) {
                    --$indexToInsert;
                    break;
                }
            }
            // find range of indexes with current count of elements }

            // find true index inside true range {
            $trueIndex = $indexToInsert;
            $break = false;
            for($j = $indexFrom; $j < $indexToInsert; ++$j) {
                $trueIndex = $j + 1;
                foreach($arrResult[$j] as $key => $value) {
                    if (array_search($value, $alphabet) > array_search($currentElementArr[$key], $alphabet)) {
                        $break = true;
                        break;
                    }
                }
                if($break) {
                    --$trueIndex;
                    break;
                }
            }
            // find true index inside true range }

            array_splice($result, $trueIndex, 0, $currentElementStr);
            array_splice($arrResult, $trueIndex, 0, array($currentElementArr));
        }
    }

    for($i = 0; $i < count($shiftedAlphabet) - 1; ++$i) {
        $tmpShiftedAlphabet = $shiftedAlphabet; // for combining all possible subcombinations
        array_splice($tmpShiftedAlphabet, $i, 1);
        combine($tmpShiftedAlphabet, $result, $arrResult);
    }
}
// recursively create all possible combinations }
var_dump($result); 

?>

Example result here