Online PHP editor | output for lec2F

@ 2019-05-31T09:58:29Z

<?php

function uniqueCombination($in, $minLength = 1, $max = 2000) {
    $count = count($in);
    $members = pow(2, $count);
    $return = array();
    for($i = 0; $i < $members; $i ++) {
        $b = sprintf("%0" . $count . "b", $i);
        $out = array();
        for($j = 0; $j < $count; $j ++) {
            $b{$j} == '1' and $out[] = $in[$j];
        }

        count($out) >= $minLength && count($out) <= $max and $return[] = $out;
        }
    return $return;
}

$numbers = array(1,2,3);
$return = uniqueCombination($numbers);
sort($return);
print_r(array_map(function($v){ return implode(" ", $v); }, $return));




?>

Output for 8.4.1 - 8.4.14: Parse error: syntax error, unexpected token "{" in /in/lec2F on line 11
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27: Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/lec2F on line 11
Process exited with code 255.
Output for 7.4.0 - 7.4.33: Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/lec2F on line 11 Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 1 2 [4] => 1 3 [5] => 2 3 [6] => 1 2 3 )
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33: Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 1 2 [4] => 1 3 [5] => 2 3 [6] => 1 2 3 )

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