3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nonexistent = null; $value = $nonexistent ?? 'default'; var_dump($value);

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)
8.3.60.0000.01516.38
8.3.50.0080.01121.19
8.3.40.0090.00618.39
8.3.30.0040.01118.57
8.3.20.0000.01420.21
8.3.10.0040.00421.92
8.3.00.0000.00819.41
8.2.180.0150.00716.38
8.2.170.0130.00722.96
8.2.160.0030.01220.32
8.2.150.0050.00324.18
8.2.140.0000.00724.66
8.2.130.0080.00026.16
8.2.120.0090.00017.25
8.2.110.0060.00320.51
8.2.100.0060.00617.63
8.2.90.0040.00419.22
8.2.80.0080.00017.97
8.2.70.0050.00517.50
8.2.60.0050.00317.90
8.2.50.0080.00018.07
8.2.40.0000.00820.96
8.2.30.0000.00819.80
8.2.20.0000.00817.67
8.2.10.0080.00017.93
8.2.00.0050.00217.96
8.1.280.0140.00725.92
8.1.270.0060.01220.38
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0040.00423.83
8.1.230.0120.00017.42
8.1.220.0000.00717.79
8.1.210.0040.00418.77
8.1.200.0040.00417.13
8.1.190.0050.00317.23
8.1.180.0030.00518.10
8.1.170.0040.00418.64
8.1.160.0040.00421.96
8.1.150.0000.00718.81
8.1.140.0040.00417.37
8.1.130.0000.00717.63
8.1.120.0040.00417.40
8.1.110.0000.00717.27
8.1.100.0000.00817.38
8.1.90.0000.00717.29
8.1.80.0070.00017.38
8.1.70.0040.00417.40
8.1.60.0050.00317.51
8.1.50.0030.00517.44
8.1.40.0040.00417.38
8.1.30.0040.00417.39
8.1.20.0030.00517.54
8.1.10.0050.00317.36
8.1.00.0050.00217.44
8.0.300.0000.00718.77
8.0.290.0000.00816.63
8.0.280.0030.00318.42
8.0.270.0040.00417.19
8.0.260.0080.00017.17
8.0.250.0000.00816.84
8.0.240.0030.00316.86
8.0.230.0070.00016.87
8.0.220.0040.00416.78
8.0.210.0040.00416.85
8.0.200.0070.00016.84
8.0.190.0040.00416.80
8.0.180.0090.00016.79
8.0.170.0000.00716.86
8.0.160.0070.00016.90
8.0.150.0030.00316.82
8.0.140.0070.00016.70
8.0.130.0050.00013.23
8.0.120.0000.00816.79
8.0.110.0030.00616.75
8.0.100.0030.00316.85
8.0.90.0000.00716.68
8.0.80.0070.00716.84
8.0.70.0050.00316.60
8.0.60.0040.00416.71
8.0.50.0000.00716.80
8.0.30.0050.01417.07
8.0.20.0160.00317.40
8.0.10.0070.00016.92
8.0.00.0090.00816.63
7.4.330.0060.00015.08
7.4.320.0030.00316.57
7.4.300.0000.00616.37
7.4.290.0070.00016.32
7.4.280.0080.00016.40
7.4.270.0030.00316.43
7.4.260.0070.00016.41
7.4.250.0030.00316.44
7.4.240.0020.00516.45
7.4.230.0070.00016.61
7.4.220.0070.01116.37
7.4.210.0110.00316.61
7.4.200.0030.00316.62
7.4.160.0170.00716.50
7.4.150.0070.01117.40
7.4.140.0090.00817.86
7.4.130.0130.00616.42
7.4.120.0080.00816.35
7.4.110.0100.00616.33
7.4.100.0190.00616.48
7.4.90.0160.00316.33
7.4.80.0060.01219.39
7.4.70.0110.01316.43
7.4.60.0000.01716.30
7.4.50.0000.00816.30
7.4.40.0110.00616.38
7.4.30.0080.00816.39
7.4.00.0060.00614.91
7.3.330.0000.00513.08
7.3.320.0020.00213.02
7.3.310.0030.00316.04
7.3.300.0030.00316.23
7.3.290.0060.01016.20
7.3.280.0080.01116.18
7.3.270.0080.00817.40
7.3.260.0060.01216.18
7.3.250.0100.00916.13
7.3.240.0090.00916.64
7.3.230.0110.00716.51
7.3.210.0070.01116.07
7.3.200.0100.01016.50
7.3.190.0090.00816.17
7.3.180.0060.00916.18
7.3.170.0160.00016.27
7.3.160.0160.00016.24
7.2.330.0070.01016.45
7.2.320.0150.00816.54
7.2.310.0100.00716.42
7.2.300.0030.01416.59
7.2.290.0090.00916.50
7.2.60.0120.00316.66
7.2.00.0030.01419.35
7.1.200.0040.01115.52
7.1.100.0000.01117.99
7.1.70.0000.00816.84
7.1.60.0030.02020.03
7.1.50.0160.00616.88
7.1.00.0030.07722.43
7.0.200.0320.00014.66
7.0.60.0030.08321.84
7.0.50.0030.04017.85
7.0.40.0130.08020.06
7.0.30.0370.07020.13
7.0.20.0270.08720.12
7.0.10.0200.08020.00
7.0.00.0030.04720.13
5.6.280.0030.06721.14
5.6.210.0130.07720.54
5.6.200.0100.06018.20
5.6.190.0130.08320.63
5.6.180.0500.04720.68
5.6.170.0230.06720.58
5.6.160.0170.08020.57
5.6.150.0170.06718.18
5.6.140.0100.08018.18
5.6.130.0000.06018.18
5.6.120.0000.05021.10
5.6.110.0000.06020.95
5.6.100.0070.08720.94
5.6.90.0070.04021.02
5.6.80.0100.07320.37
5.5.350.0000.04720.52
5.5.340.0070.06718.02
5.5.330.0070.06320.27
5.5.320.3200.04720.26
5.5.310.0130.05320.32
5.5.300.0030.07317.98
5.5.290.0030.09017.98
5.5.280.0100.08020.79
5.5.270.0030.09020.85
5.5.260.0070.03720.79
5.5.250.0030.04020.70
5.5.240.0000.08720.11
5.4.450.0270.07719.46
5.4.440.0370.06319.27
5.4.430.0270.07719.54
5.4.420.0370.07019.63
5.4.410.0300.04319.26
5.4.400.0230.05019.00
5.4.390.0300.04019.18
5.4.380.0230.04318.99
5.4.370.0400.06319.02
5.4.360.0470.05319.31
5.4.350.0330.04019.17
5.4.340.0300.04019.20
5.4.320.0230.04318.95
5.4.310.0230.07319.27
5.4.300.0230.03719.05
5.4.290.0330.06719.09
5.4.280.0200.08019.16
5.4.270.0330.06019.13
5.4.260.0230.05018.94
5.4.250.0330.07018.86
5.4.240.0200.04018.86
5.4.230.0270.04319.07
5.4.220.0400.06019.25
5.4.210.0330.06019.22
5.4.200.0430.05318.84
5.4.190.0330.05718.86
5.4.180.0230.04019.07
5.4.170.0230.04319.05
5.4.160.0330.05318.97
5.4.150.0270.06318.85
5.4.140.0270.06716.52
5.4.130.0370.06316.35
5.4.120.0270.07716.35
5.4.110.0230.03716.55
5.4.100.0300.04016.54
5.4.90.0270.04716.51
5.4.80.0300.06716.57

preferences:
60.19 ms | 401 KiB | 5 Q