3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getCombinedSum($digits, $sum) { if(!is_int($digits) || !is_int($sum) || $digits<1 || $sum<0) { throw new InvalidArgumentException('Invalid numeric format'); } if($sum>9*$digits) { throw new LogicException('Sum out of range'); } if($digits==1) { return $sum; } $result = []; for($digit=0; $digit<10; $digit++) { if($sum-$digit>0) { $result[] = $digit.getCombinedSum($digits-1, $sum-$digit)); } else { break; } } return $result; } var_dump(getCombinedSum(3, 4));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.220.0160.05912.39
5.4.210.0110.04112.39
5.4.200.0150.04112.39
5.4.190.0140.04312.39
5.4.180.0120.04612.39
5.4.170.0130.04612.40
5.4.160.0160.03912.39
5.4.150.0110.04112.39
5.4.140.0130.04312.08
5.4.130.0110.04312.06
5.4.120.0120.03812.03
5.4.110.0140.04312.02
5.4.100.0190.04612.02
5.4.90.0230.06712.02
5.4.80.0200.06512.02
5.4.70.0150.03812.02
5.4.60.0130.03712.02
5.4.50.0130.04512.02
5.4.40.0190.06312.01
5.4.30.0210.06312.00
5.4.20.0220.06112.00
5.4.10.0130.03912.00
5.4.00.0200.04711.49
5.3.270.0130.05812.72
5.3.260.0150.04912.72
5.3.250.0220.07312.72
5.3.240.0240.06912.72
5.3.230.0270.06512.71
5.3.220.0190.05212.68
5.3.210.0130.04112.68
5.3.200.0280.08012.68
5.3.190.0120.05512.68
5.3.180.0150.05312.67
5.3.170.0190.06012.67
5.3.160.0260.07112.68
5.3.150.0270.06512.67
5.3.140.0270.07812.66
5.3.130.0200.06912.66
5.3.120.0130.04412.66
5.3.110.0310.08612.66
5.3.100.0130.04112.12
5.3.90.0180.06412.09
5.3.80.0170.04912.09
5.3.70.0130.04312.08
5.3.60.0230.06112.08
5.3.50.0220.05012.02
5.3.40.0130.03912.01
5.3.30.0130.03911.98
5.3.20.0100.04111.76
5.3.10.0110.03911.72
5.3.00.0200.06511.71

preferences:
134.54 ms | 1394 KiB | 7 Q