Php recursion to get all possibilities of strings

Question

Here is my code to get all possibilities:

$seq[1] = \'d\';
$seq[2] = \'f\';
$seq[3] = \'w\';
$seq[4] = \'s\';

for($i = 1; $i < 5; $i++)
{
    $s[\'length         


        

Answer 1

Here is my function to print all possible character combinations:

function printCombinations($var, $begin = 0, $preText = "") {
    for($i = $begin; $i < count($var); $i++) {
        echo $preText . $var[$i] . "\n";
        if(($i+1) < count($var))
            printCombinations($var, $i+1, $preText . $var[$i]);
    }
}

printCombinations(array('a','b','c','d','e'));