3v4l.org

run code in 300+ PHP versions simultaneously
<?php function subtract($a, $b) { $a2 = []; $lookup = array_count_values($b); foreach ($a as $v) { if ($lookup[$v] ?? 0) { $lookup[$v]--; } else { $a2[] = $v; } } return $a2; } var_dump(subtract( ['a', 'a', 'b', 'c', 'd', 'd', 'd', 'd'], ['a', 'b', 'd', 'd'] ));

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)
8.3.70.0060.01018.18
8.3.60.0150.00018.55
8.3.50.0070.00717.43
8.3.40.0140.00718.65
8.3.30.0040.01118.75
8.3.20.0040.00422.09
8.3.10.0050.00320.78
8.3.00.0050.00220.89
8.2.190.0070.00716.63
8.2.180.0070.01318.04
8.2.170.0100.00622.96
8.2.160.0140.00018.87
8.2.150.0090.00624.18
8.2.140.0000.00824.66
8.2.130.0040.00421.05
8.2.120.0000.00726.35
8.2.110.0100.00022.25
8.2.100.0060.00617.88
8.2.90.0030.00619.22
8.2.80.0000.00818.04
8.2.70.0000.00817.63
8.2.60.0000.00818.16
8.2.50.0050.00318.10
8.2.40.0030.00522.31
8.2.30.0040.00419.20
8.2.20.0040.00418.20
8.2.10.0050.00218.24
8.2.00.0000.00818.16
8.1.280.0090.00625.92
8.1.270.0040.00422.22
8.1.260.0140.00426.35
8.1.250.0070.00328.09
8.1.240.0060.00322.68
8.1.230.0100.00019.01
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0070.00417.35
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0090.00018.59
8.1.160.0040.00419.04
8.1.150.0040.00418.90
8.1.140.0000.00719.53
8.1.130.0000.00817.43
8.1.120.0000.00717.50
8.1.110.0040.00417.52
8.1.100.0040.00417.47
8.1.90.0000.00817.51
8.1.80.0070.00317.49
8.1.70.0070.00017.40
8.1.60.0040.00417.54
8.1.50.0030.00617.56
8.1.40.0050.00317.39
8.1.30.0040.00417.66
8.1.20.0000.00717.55
8.1.10.0050.00217.50
8.1.00.0000.00717.34
8.0.300.0030.00718.77
8.0.290.0000.00716.63
8.0.280.0030.00318.37
8.0.270.0040.00417.27
8.0.260.0000.00816.83
8.0.250.0030.00316.94
8.0.240.0000.00616.93
8.0.230.0000.00716.97
8.0.220.0030.00516.80
8.0.210.0040.00416.77
8.0.200.0070.00016.96
8.0.190.0080.00416.94
8.0.180.0070.00016.91
8.0.170.0030.00616.96
8.0.160.0030.00516.96
8.0.150.0040.00416.81
8.0.140.0040.00416.88
8.0.130.0000.00613.34
8.0.120.0050.00216.84
8.0.110.0070.00017.00
8.0.100.0000.00816.70
8.0.90.0000.00716.78
8.0.80.0080.00816.86
8.0.70.0000.00716.80
8.0.60.0000.00716.71
8.0.50.0000.00716.93
8.0.30.0110.00717.18
8.0.20.0140.00617.40
8.0.10.0060.00316.90
8.0.00.0070.01116.80
7.4.330.0020.00215.55
7.4.320.0000.00616.46
7.4.300.0040.00416.43
7.4.290.0060.00316.58
7.4.280.0030.00416.49
7.4.270.0000.00716.60
7.4.260.0000.00716.64
7.4.250.0000.00716.43
7.4.240.0030.00316.62
7.4.230.0000.00716.32
7.4.220.0210.00716.48
7.4.210.0120.00316.67
7.4.200.0050.00216.68
7.4.160.0060.00916.46
7.4.150.0100.00717.40
7.4.140.0090.01017.86
7.4.130.0070.01716.38
7.4.120.0080.01616.59
7.4.110.0070.01116.45
7.4.100.0170.00416.55
7.4.90.0060.01216.39
7.4.80.0120.00919.39
7.4.70.0130.00316.74
7.4.60.0080.00816.59
7.4.50.0000.01116.38
7.4.40.0080.00816.26
7.4.30.0120.00616.37
7.4.00.0040.01214.87
7.3.330.0000.00513.24
7.3.320.0000.00513.24
7.3.310.0040.00416.32
7.3.300.0000.00716.31
7.3.290.0050.01016.35
7.3.280.0090.00716.33
7.3.270.0070.01017.40
7.3.260.0060.01216.55
7.3.250.0140.00416.48
7.3.240.0070.01116.39
7.3.230.0140.00416.30
7.3.210.0110.00516.45
7.3.200.0110.00916.39
7.3.190.0130.00316.52
7.3.180.0080.00816.50
7.3.170.0110.00716.75
7.3.160.0090.00616.64
7.3.10.0040.00816.84
7.3.00.0040.00816.27
7.2.330.0000.01816.44
7.2.320.0070.01116.75
7.2.310.0100.00716.56
7.2.300.0060.01216.62
7.2.290.0170.00016.82
7.2.130.0060.00617.09
7.2.120.0040.01116.92
7.2.110.0030.00916.82
7.2.100.0030.01216.90
7.2.90.0070.00416.84
7.2.80.0070.01017.09
7.2.70.0100.00317.04
7.2.60.0060.00717.05
7.2.50.0000.00916.95
7.2.40.0040.01116.84
7.2.30.0060.00617.02
7.2.20.0100.00017.05
7.2.10.0060.00717.03
7.2.00.0030.00716.85
7.1.250.0030.01015.79
7.1.200.0110.00315.63
7.1.70.0500.00915.48
7.1.60.0590.01033.25
7.1.50.0610.00732.69
7.1.40.0600.00732.67
7.1.30.0680.00632.59
7.1.20.0570.01732.98
7.1.10.0480.01014.84
7.1.00.0560.00714.81
7.0.200.0470.00714.72
7.0.190.0580.00614.90
7.0.180.0530.01014.65
7.0.170.0520.01014.43
7.0.160.0620.00614.26
7.0.150.0620.00714.44
7.0.140.1420.01014.59
7.0.130.0550.00314.74
7.0.120.0600.00314.72
7.0.110.0510.01014.66
7.0.100.0590.00714.58
7.0.90.0480.00714.39
7.0.80.0480.01014.61
7.0.70.0480.01014.63
7.0.60.0500.01014.30
7.0.50.0460.01314.32
7.0.40.0640.00014.68
7.0.30.0560.00714.62
7.0.20.0490.01314.69
7.0.10.0500.00714.67
7.0.00.0470.01314.55

preferences:
25.26 ms | 401 KiB | 5 Q