3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a($a, $b = null) { var_dump($a); var_dump(isset($a)); var_dump(is_null($a)); var_dump($b); var_dump(isset($b)); var_dump(is_null($b)); } a(); print "---"; a(1); print "---"; a(1,2); print "---"; a(null); print "---"; a(null, null); print "---";

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)
8.3.60.0120.00916.75
8.3.50.0180.00322.05
8.3.40.0110.00718.84
8.3.30.0110.00418.79
8.3.20.0090.00020.20
8.3.10.0080.00023.39
8.3.00.0060.00319.15
8.2.180.0140.00716.75
8.2.170.0100.01022.96
8.2.160.0070.00720.52
8.2.150.0030.00624.18
8.2.140.0110.00324.66
8.2.130.0060.00317.38
8.2.120.0050.00326.35
8.2.110.0000.00922.20
8.2.100.0140.00317.91
8.2.90.0000.00819.14
8.2.80.0000.00817.97
8.2.70.0000.00917.63
8.2.60.0030.00517.93
8.2.50.0000.00918.07
8.2.40.0030.00619.40
8.2.30.0040.00420.50
8.2.20.0040.00417.61
8.2.10.0050.00317.92
8.2.00.0070.00018.05
8.1.280.0070.01425.92
8.1.270.0040.00422.14
8.1.260.0080.00028.09
8.1.250.0050.00328.09
8.1.240.0040.00419.17
8.1.230.0110.00017.53
8.1.220.0000.00917.74
8.1.210.0080.00018.77
8.1.200.0070.00317.35
8.1.190.0090.00017.22
8.1.180.0040.00418.10
8.1.170.0060.00618.58
8.1.160.0000.00721.94
8.1.150.0040.00418.77
8.1.140.0030.00619.37
8.1.130.0030.00317.53
8.1.120.0030.00517.40
8.1.110.0000.00717.21
8.1.100.0000.00817.22
8.1.90.0040.00417.27
8.1.80.0000.00817.33
8.1.70.0030.00317.25
8.1.60.0030.00617.38
8.1.50.0000.00817.40
8.1.40.0080.00017.52
8.1.30.0090.00017.52
8.1.20.0000.00917.46
8.1.10.0070.00017.50
8.1.00.0080.00017.33
8.0.300.0080.00018.77
8.0.290.0000.00716.75
8.0.280.0040.00418.29
8.0.270.0000.00717.13
8.0.260.0000.00617.11
8.0.250.0070.00016.93
8.0.240.0000.00617.00
8.0.230.0000.00616.89
8.0.220.0000.00716.82
8.0.210.0040.00416.79
8.0.200.0000.00816.93
8.0.190.0040.00416.84
8.0.180.0000.00716.77
8.0.170.0070.00016.93
8.0.160.0040.00317.02
8.0.150.0040.00416.82
8.0.140.0000.01016.81
8.0.130.0030.00313.41
8.0.120.0040.00416.85
8.0.110.0000.00716.84
8.0.100.0050.00216.77
8.0.90.0040.00416.89
8.0.80.0060.00916.94
8.0.70.0030.00616.82
8.0.60.0070.00016.85
8.0.50.0030.00516.88
8.0.30.0050.01316.92
8.0.20.0060.01817.40
8.0.10.0000.00817.01
8.0.00.0110.00616.93
7.4.330.0020.00215.08
7.4.320.0060.00016.38
7.4.300.0030.00316.46
7.4.290.0030.00316.34
7.4.280.0100.00016.52
7.4.270.0040.00416.54
7.4.260.0060.00013.22
7.4.250.0040.00416.43
7.4.240.0020.00516.55
7.4.230.0000.00716.36
7.4.220.0090.00916.47
7.4.210.0110.00416.39
7.4.200.0000.00716.42
7.4.160.0060.01016.34
7.4.150.0080.01217.40
7.4.140.0120.00717.86
7.4.130.0110.00916.56
7.4.120.0070.01016.40
7.4.110.0120.00916.20
7.4.100.0200.00316.65
7.4.90.0190.00416.46
7.4.80.0030.01519.39
7.4.70.0100.00716.41
7.4.60.0060.00916.54
7.4.50.0050.00316.41
7.4.40.0210.00416.58
7.4.30.0110.00916.73
7.4.00.0030.00815.06
7.3.330.0000.00613.35
7.3.320.0000.00513.27
7.3.310.0000.00716.33
7.3.300.0000.00816.30
7.3.290.0130.00316.26
7.3.280.0070.00916.30
7.3.270.0110.00617.40
7.3.260.0140.00316.37
7.3.250.0080.01016.44
7.3.240.0080.01116.35
7.3.230.0140.00316.39
7.3.210.0060.01216.46
7.3.200.0060.01116.32
7.3.190.0060.01216.45
7.3.180.0000.01516.56
7.3.170.0030.01416.57
7.3.160.0100.00716.43
7.3.10.0150.00016.68
7.3.00.0070.01016.40
7.2.330.0060.01216.61
7.2.320.0090.01516.36
7.2.310.0200.00016.42
7.2.300.0070.01016.43
7.2.290.0060.01216.45
7.2.130.0000.01416.84
7.2.120.0060.00916.88
7.2.110.0030.00716.91
7.2.100.0070.00716.57
7.2.90.0030.01316.95
7.2.80.0100.00016.86
7.2.70.0040.01216.86
7.2.60.0090.00616.84
7.2.50.0070.00416.68
7.2.40.0030.01316.54
7.2.30.0000.01616.62
7.2.20.0110.00716.75
7.2.10.0090.00616.59
7.2.00.0130.00717.91
7.1.250.0050.00315.75
7.1.200.0100.00015.52
7.1.100.0000.01418.13
7.1.70.0050.00316.90
7.1.60.0110.01419.48
7.1.50.0130.00916.76
7.1.00.0130.06322.30
7.0.200.0250.00614.79
7.0.60.0100.05019.98
7.0.50.0070.08717.97
7.0.40.0130.08320.11
7.0.30.0230.05020.26
7.0.20.0300.05320.21
7.0.10.0100.08320.30
7.0.00.0100.08320.18
5.6.280.0030.05320.79
5.6.210.0030.08320.55
5.6.200.0030.04718.20
5.6.190.0170.07320.35
5.6.180.0230.07020.39
5.6.170.0270.07720.44
5.6.160.0070.07320.55
5.6.150.0070.07718.20
5.6.140.0130.06318.18
5.6.130.0030.04318.18
5.6.120.0070.07021.15
5.6.110.0200.07021.14
5.6.100.0130.07721.14
5.6.90.0100.08021.05
5.6.80.0000.04720.51
5.5.350.4170.04020.38
5.5.340.0070.04717.98
5.5.330.0100.06720.13
5.5.320.0330.07320.27
5.5.310.0270.04020.41
5.5.300.0000.04318.08
5.5.290.0070.07718.04
5.5.280.0030.09020.89
5.5.270.0230.06720.79
5.5.260.0200.05020.87
5.5.250.0030.08320.77
5.5.240.0500.05720.19

preferences:
51.87 ms | 401 KiB | 5 Q