3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '' ?? 'empty'; $b = null ?? 'empty'; var_dump($a, $b);

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)
8.3.60.0140.00716.38
8.3.50.0120.00821.98
8.3.40.0140.00418.73
8.3.30.0130.00818.59
8.3.20.0070.00020.27
8.3.10.0080.00023.69
8.3.00.0060.00319.26
8.2.180.0160.00618.43
8.2.170.0060.00922.96
8.2.160.0070.00720.41
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0030.00617.50
8.2.120.0040.00426.35
8.2.110.0060.00320.35
8.2.100.0040.00817.72
8.2.90.0000.00819.04
8.2.80.0080.00017.97
8.2.70.0060.00317.50
8.2.60.0050.00317.80
8.2.50.0040.00418.07
8.2.40.0060.00319.34
8.2.30.0050.00220.61
8.2.20.0000.00917.66
8.2.10.0000.00818.03
8.2.00.0000.00717.91
8.1.280.0100.01025.92
8.1.270.0060.00323.83
8.1.260.0000.00728.09
8.1.250.0040.00428.09
8.1.240.0050.00521.99
8.1.230.0070.00420.87
8.1.220.0000.00717.74
8.1.210.0000.00818.77
8.1.200.0100.00017.23
8.1.190.0000.00817.00
8.1.180.0000.00818.10
8.1.170.0000.00718.51
8.1.160.0040.00422.00
8.1.150.0000.00718.81
8.1.140.0080.00019.46
8.1.130.0040.00417.62
8.1.120.0040.00417.39
8.1.110.0040.00417.43
8.1.100.0040.00417.36
8.1.90.0000.00817.38
8.1.80.0040.00417.39
8.1.70.0000.00717.25
8.1.60.0030.00617.40
8.1.50.0040.00417.45
8.1.40.0040.00417.34
8.1.30.0000.00917.59
8.1.20.0050.00317.50
8.1.10.0060.00317.39
8.1.00.0040.00417.42
8.0.300.0000.00818.77
8.0.290.0020.00516.75
8.0.280.0070.00018.37
8.0.270.0040.00417.24
8.0.260.0040.00417.18
8.0.250.0000.00816.92
8.0.240.0070.00016.82
8.0.230.0000.00716.84
8.0.220.0030.00316.89
8.0.210.0070.00016.88
8.0.200.0030.00316.86
8.0.190.0050.00316.98
8.0.180.0040.00416.89
8.0.170.0000.00816.90
8.0.160.0050.00316.79
8.0.150.0000.00716.79
8.0.140.0080.00016.81
8.0.130.0050.00213.29
8.0.120.0060.00316.77
8.0.110.0040.00416.93
8.0.100.0030.00516.91
8.0.90.0050.00216.86
8.0.80.0030.01316.93
8.0.70.0020.00516.87
8.0.60.0000.00716.68
8.0.50.0000.00716.81
8.0.30.0060.01316.89
8.0.20.0090.01017.40
8.0.10.0020.00516.99
8.0.00.0130.00816.61
7.4.330.0030.00315.08
7.4.320.0000.00616.52
7.4.300.0000.00616.41
7.4.290.0000.00816.54
7.4.280.0080.00016.56
7.4.270.0000.00716.35
7.4.260.0060.00316.35
7.4.250.0000.00816.49
7.4.240.0030.00316.51
7.4.230.0050.00216.47
7.4.220.0090.00916.59
7.4.210.0040.01116.41
7.4.200.0000.00716.42
7.4.160.0090.00616.32
7.4.150.0140.00317.40
7.4.140.0060.01317.86
7.4.130.0120.00616.53
7.4.120.0050.01516.38
7.4.110.0130.01016.38
7.4.100.0150.00416.36
7.4.90.0120.00616.38
7.4.80.0100.01319.39
7.4.70.0090.01316.36
7.4.60.0100.00716.62
7.4.50.0060.00616.31
7.4.40.0000.02016.23
7.4.30.0100.01016.39
7.4.00.0100.00314.80
7.3.330.0050.00013.12
7.3.320.0030.00313.03
7.3.310.0030.00316.30
7.3.300.0030.00316.20
7.3.290.0080.00916.17
7.3.280.0090.00816.21
7.3.270.0120.00617.40
7.3.260.0200.00316.33
7.3.250.0120.00516.19
7.3.240.0100.00916.36
7.3.230.0070.01016.42
7.3.210.0100.01016.47
7.3.200.0040.01116.23
7.3.190.0130.00816.46
7.3.180.0090.01216.35
7.3.170.0030.01316.27
7.3.160.0100.00616.16
7.2.330.0040.01516.25
7.2.320.0030.01416.52
7.2.310.0070.01016.40
7.2.300.0070.01116.57
7.2.290.0130.00316.30
7.2.60.0000.01516.86
7.2.00.0030.01019.03
7.1.200.0000.01215.70
7.1.100.0000.01118.00
7.1.70.0000.00717.13
7.1.60.0160.01019.12
7.1.50.0060.01616.87
7.1.00.0100.07022.30
7.0.200.0000.00716.63
7.0.60.0130.03719.87
7.0.50.0030.08317.81
7.0.40.0070.05319.98
7.0.30.0370.06720.09
7.0.20.0170.04720.21
7.0.10.0130.08020.16
7.0.00.0130.07320.16
5.6.280.0000.03320.77
5.6.210.0070.08320.61
5.6.200.0100.04018.29
5.6.190.0070.04020.55
5.6.180.0200.08320.46
5.6.170.0230.04720.38
5.6.160.0000.04320.46
5.6.150.0100.05018.16
5.6.140.0070.04018.24
5.6.130.0030.05018.28
5.6.120.0030.07321.04
5.6.110.0100.08321.11
5.6.100.0070.05021.10
5.6.90.0100.08321.00
5.6.80.0130.06020.27
5.5.350.4170.03720.46
5.5.340.0000.04318.14
5.5.330.0130.05320.43
5.5.320.0000.04320.51
5.5.310.0130.07320.34
5.5.300.0100.07718.08
5.5.290.0070.08017.94
5.5.280.0100.07020.98
5.5.270.0170.07720.86
5.5.260.0070.09020.76
5.5.250.0070.04320.54
5.5.240.0270.06320.24

preferences:
51.09 ms | 401 KiB | 5 Q