3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = NULL; $b = NULL; $c = NULL; var_dump(isset($a)); var_dump(isset($b)); var_dump(empty($c)); var_dump(empty($d)); var_dump($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)
8.3.60.0030.01018.43
8.3.50.0100.00821.93
8.3.40.0060.00918.71
8.3.30.0070.00719.14
8.3.20.0000.00720.25
8.3.10.0040.00422.10
8.3.00.0030.00522.51
8.2.180.0170.00716.63
8.2.170.0070.01022.96
8.2.160.0100.00320.66
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00519.36
8.2.110.0100.00022.30
8.2.100.0030.00817.91
8.2.90.0000.00817.75
8.2.80.0030.00617.97
8.2.70.0060.00317.92
8.2.60.0040.00417.80
8.2.50.0060.00318.10
8.2.40.0040.00420.63
8.2.30.0040.00417.86
8.2.20.0000.00717.57
8.2.10.0040.00419.53
8.2.00.0070.00017.68
8.1.280.0140.00425.92
8.1.270.0080.00022.09
8.1.260.0090.00026.35
8.1.250.0000.00728.09
8.1.240.0030.00522.14
8.1.230.0000.01118.87
8.1.220.0000.00917.74
8.1.210.0000.00918.77
8.1.200.0030.00617.23
8.1.190.0030.00617.10
8.1.180.0000.00918.10
8.1.170.0030.00518.57
8.1.160.0070.00021.86
8.1.150.0070.00018.55
8.1.140.0000.00717.29
8.1.130.0000.00717.91
8.1.120.0070.00017.40
8.1.110.0000.00717.30
8.1.100.0040.00417.40
8.1.90.0000.00717.40
8.1.80.0000.00817.41
8.1.70.0000.00717.32
8.1.60.0000.00817.40
8.1.50.0000.00817.32
8.1.40.0060.00317.35
8.1.30.0050.00317.41
8.1.20.0040.00417.62
8.1.10.0030.00617.30
8.1.00.0050.00317.29
8.0.300.0040.00420.09
8.0.290.0030.00616.63
8.0.280.0000.00818.25
8.0.270.0020.00517.10
8.0.260.0060.00316.80
8.0.250.0000.00716.98
8.0.240.0000.00716.93
8.0.230.0000.00716.93
8.0.220.0020.00516.88
8.0.210.0070.00016.79
8.0.200.0040.00417.00
8.0.190.0030.00616.94
8.0.180.0080.00016.85
8.0.170.0040.00416.87
8.0.160.0000.00716.89
8.0.150.0080.00016.79
8.0.140.0070.00016.87
8.0.130.0060.00013.40
8.0.120.0030.00516.73
8.0.110.0000.00716.80
8.0.100.0000.00716.92
8.0.90.0070.00016.82
8.0.80.0070.01016.84
8.0.70.0000.00716.93
8.0.60.0050.00216.81
8.0.50.0070.00016.75
8.0.30.0130.00617.02
8.0.20.0110.00717.40
8.0.10.0050.00316.88
8.0.00.0090.01016.79
7.4.330.0020.00215.00
7.4.320.0030.00316.54
7.4.300.0070.00016.45
7.4.290.0000.00716.50
7.4.280.0000.00716.44
7.4.270.0000.00716.52
7.4.260.0030.00316.39
7.4.250.0000.00716.48
7.4.240.0050.00216.51
7.4.230.0000.00716.54
7.4.220.0110.00716.55
7.4.210.0070.00816.41
7.4.200.0000.00716.46
7.4.190.0030.00316.59
7.4.160.0040.01216.45
7.4.150.0110.00817.40
7.4.140.0090.00817.86
7.4.130.0070.00916.54
7.4.120.0070.01016.51
7.4.110.0100.00716.25
7.4.100.0110.00716.40
7.4.90.0070.01016.53
7.4.80.0060.01219.39
7.4.70.0100.00716.32
7.4.60.0110.01116.54
7.4.50.0000.00816.40
7.4.40.0040.01222.77
7.4.30.0030.01316.58
7.4.00.0000.01214.62
7.3.330.0030.00313.10
7.3.320.0030.00313.06
7.3.310.0050.00316.18
7.3.300.0000.00716.20
7.3.290.0060.00916.14
7.3.280.0080.00616.17
7.3.270.0120.00617.40
7.3.260.0120.01516.29
7.3.250.0120.00816.26
7.3.240.0040.01216.29
7.3.230.0130.00316.39
7.3.210.0090.00916.39
7.3.200.0100.00619.39
7.3.190.0160.00616.23
7.3.180.0100.00616.36
7.3.170.0050.01016.27
7.3.160.0150.00016.50
7.3.120.0060.01014.42
7.3.10.0100.00316.49
7.3.00.0030.01016.56
7.2.330.0140.01016.40
7.2.320.0090.00616.62
7.2.310.0060.01316.63
7.2.300.0070.01016.25
7.2.290.0070.01116.61
7.2.130.0110.00316.47
7.2.120.0030.00916.43
7.2.110.0030.00916.75
7.2.100.0100.00316.43
7.2.90.0030.01016.64
7.2.80.0100.00316.88
7.2.70.0060.00616.89
7.2.60.0030.00816.71
7.2.50.0030.00716.66
7.2.40.0040.00816.67
7.2.30.0060.00616.77
7.2.20.0110.00316.71
7.2.10.0000.01216.56
7.2.00.0070.00817.91
7.1.250.0040.00715.66
7.1.100.0040.00418.29
7.1.70.0050.00217.22
7.1.60.0070.01719.82
7.1.50.0160.02034.73
7.1.00.0030.07722.40
7.0.200.0000.01016.62
7.0.140.0100.06722.16
7.0.60.0030.08319.93
7.0.50.0100.07717.88
7.0.40.0100.08719.96
7.0.30.0270.05020.02
7.0.20.0270.04320.09
7.0.10.0200.06320.18
7.0.00.0100.04720.05
5.6.280.0030.07320.81
5.6.210.0100.07720.56
5.6.200.0030.05718.23
5.6.190.0100.03720.39
5.6.180.3530.04020.37
5.6.170.0330.07720.49
5.6.160.0100.07720.51
5.6.150.0100.06018.17
5.6.140.0130.07318.11
5.6.130.0030.06318.11
5.6.120.0230.07021.07
5.6.110.0100.07720.99
5.6.100.0030.08320.96
5.6.90.0170.06721.02
5.6.80.0100.06320.52
5.6.70.0400.05320.36
5.5.350.0000.05720.39
5.5.340.0030.05018.00
5.5.330.0000.05720.25
5.5.320.0230.07720.20
5.5.310.0070.04720.16
5.5.300.0070.04717.98
5.5.290.0100.08017.97
5.5.280.0070.05320.79
5.5.270.0030.08320.75
5.5.260.0070.08020.76
5.5.250.0170.05720.59
5.5.240.0130.07720.27
5.4.450.0600.05319.49
5.4.440.0430.06319.54
5.4.430.0570.05319.40
5.4.420.0270.06319.32
5.4.410.0770.05018.97
5.4.400.0830.00018.75
5.4.390.0830.00018.78
5.4.380.0370.06318.71
5.4.370.0200.05718.52
5.4.360.0270.05718.68
5.4.350.0300.05318.68
5.4.340.0230.06018.64
5.4.320.0040.04212.45
5.4.310.0070.04912.45
5.4.300.0120.05012.45
5.4.290.0110.04112.45
5.4.280.0100.03712.34
5.4.270.0060.04112.35
5.4.260.0230.04319.02
5.4.250.0030.05319.02
5.4.240.0170.04318.88
5.4.230.0200.04018.89
5.4.220.0000.06018.75
5.4.210.0130.04718.93
5.4.200.0130.05318.87
5.4.190.0130.05318.78
5.4.180.0100.05018.87
5.4.170.0070.07718.89
5.4.160.0130.05018.90
5.4.150.0070.08318.85
5.4.140.0130.05016.46
5.4.130.0070.05016.50
5.4.120.0100.04716.38
5.4.110.0170.05316.35
5.4.100.0030.05316.44
5.4.90.0070.04716.50
5.4.80.0130.04316.43
5.4.70.0130.04316.47
5.4.60.0170.06016.32
5.4.50.0200.04016.30
5.4.40.0100.05016.36
5.4.30.0030.07716.45
5.4.20.0130.04716.25
5.4.10.0100.05716.46
5.4.00.0030.06015.91
5.3.290.0060.04612.80
5.3.280.0070.05314.68
5.3.270.0030.06014.69
5.3.260.0200.05714.64
5.3.250.0200.04014.61
5.3.240.0130.04714.45
5.3.230.0030.05314.30
5.3.220.0100.06014.59
5.3.210.0270.05314.58
5.3.200.0030.05714.57
5.3.190.0130.04314.58
5.3.180.0070.05014.65
5.3.170.0000.05714.48
5.3.160.0170.04014.41
5.3.150.0100.04714.43
5.3.140.0070.05314.55
5.3.130.0130.05014.70
5.3.120.0100.06314.43
5.3.110.0100.05014.64
5.3.100.0070.05314.04
5.3.90.0000.05714.17
5.3.80.0130.04713.95
5.3.70.0100.04714.06
5.3.60.0030.05013.85
5.3.50.0070.05014.10
5.3.40.0100.05014.10
5.3.30.0230.04013.74
5.3.20.0070.05013.54
5.3.10.0070.05013.65
5.3.00.0070.05013.68
5.2.170.0130.04010.90
5.2.160.0070.04011.14
5.2.150.0100.04011.29
5.2.140.0130.05011.07
5.2.130.0070.05711.10
5.2.120.0100.03311.00
5.2.110.0130.05011.00
5.2.100.0070.04710.93
5.2.90.0100.03711.10
5.2.80.0030.04311.01
5.2.70.0100.03710.99
5.2.60.0030.04011.07
5.2.50.0100.04710.91
5.2.40.0070.05310.82
5.2.30.0070.04710.88
5.2.20.0070.03710.97
5.2.10.0030.04011.01
5.2.00.0070.03710.61
5.1.60.0030.04010.05
5.1.50.0070.0309.84
5.1.40.0000.0539.90
5.1.30.0030.04310.33
5.1.20.0000.04010.27
5.1.10.0070.04010.17
5.1.00.0100.03010.12
5.0.50.0070.0378.43
5.0.40.0070.0308.33
5.0.30.0030.0438.07
5.0.20.0100.0338.23
5.0.10.0000.0338.14
5.0.00.0070.0508.23
4.4.90.0070.0177.02
4.4.80.0100.0277.02
4.4.70.0030.0307.02
4.4.60.0030.0237.02
4.4.50.0030.0207.02
4.4.40.0070.0337.02
4.4.30.0000.0237.02
4.4.20.0000.0337.02
4.4.10.0030.0207.02
4.4.00.0030.0337.02
4.3.110.0000.0277.02
4.3.100.0100.0207.02
4.3.90.0030.0207.02
4.3.80.0030.0377.02
4.3.70.0000.0237.02
4.3.60.0000.0277.02
4.3.50.0030.0237.02
4.3.40.0000.0437.02
4.3.30.0030.0307.02
4.3.20.0000.0237.02
4.3.10.0000.0207.02
4.3.00.0130.0279.32

preferences:
44.41 ms | 401 KiB | 5 Q