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<?php function powerSet($in,$minLength = 1) { $count = count($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; $j++) { if ($b{$j} == '1') $out[] = $in[$j]; } if (count($out) >= $minLength) { $return[] = $out; } } return $return; } $x = powerSet(array(1,1)); foreach($x as $r) { echo implode($r, ' ') . "\n"; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/GtWsR on line 11
Process exited with code 255.
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/GtWsR on line 11 Deprecated: implode(): Passing glue string after array is deprecated. Swap the parameters in /in/GtWsR on line 23 1 Deprecated: implode(): Passing glue string after array is deprecated. Swap the parameters in /in/GtWsR on line 23 1 Deprecated: implode(): Passing glue string after array is deprecated. Swap the parameters in /in/GtWsR on line 23 1 1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.26
1 1 1 1
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277.03 ms | 404 KiB | 457 Q