3v4l.org

run code in 300+ PHP versions simultaneously
<?php $y = null; $b = 5; $x = $y ?? $b; var_dump($x);

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)
8.3.60.0120.00918.18
8.3.50.0140.00721.93
8.3.40.0040.01118.49
8.3.30.0110.00318.68
8.3.20.0080.00020.13
8.3.10.0000.00721.64
8.3.00.0070.00020.04
8.2.180.0140.00716.38
8.2.170.0080.00822.96
8.2.160.0070.00720.94
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0030.00517.50
8.2.110.0070.00320.22
8.2.100.0120.00017.50
8.2.90.0040.00419.05
8.2.80.0000.00817.97
8.2.70.0090.00017.50
8.2.60.0080.00017.92
8.2.50.0030.00618.07
8.2.40.0080.00019.46
8.2.30.0030.00320.74
8.2.20.0000.00717.66
8.2.10.0040.00418.00
8.2.00.0020.00518.08
8.1.280.0060.00925.92
8.1.270.0080.00023.77
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00323.74
8.1.230.0030.00917.42
8.1.220.0000.00817.79
8.1.210.0060.00318.77
8.1.200.0060.00317.23
8.1.190.0040.00416.88
8.1.180.0040.00418.10
8.1.170.0030.00518.50
8.1.160.0000.00722.00
8.1.150.0040.00418.86
8.1.140.0030.00517.38
8.1.130.0070.00017.37
8.1.120.0040.00417.46
8.1.110.0000.00717.27
8.1.100.0000.00717.36
8.1.90.0040.00417.32
8.1.80.0040.00417.36
8.1.70.0070.00017.40
8.1.60.0000.00817.52
8.1.50.0000.00917.44
8.1.40.0060.00617.29
8.1.30.0040.00417.55
8.1.20.0000.00717.59
8.1.10.0080.00017.42
8.1.00.0040.00417.45
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0080.00018.35
8.0.270.0060.00317.19
8.0.260.0030.00318.45
8.0.250.0000.00716.91
8.0.240.0070.00016.78
8.0.230.0030.00616.81
8.0.220.0030.00316.83
8.0.210.0040.00416.81
8.0.200.0030.00316.95
8.0.190.0000.00716.89
8.0.180.0030.00816.80
8.0.170.0030.00516.85
8.0.160.0000.00716.86
8.0.150.0040.00416.68
8.0.140.0040.00416.75
8.0.130.0030.00313.25
8.0.120.0050.00316.69
8.0.110.0040.00416.79
8.0.100.0030.00516.77
8.0.90.0030.00516.87
8.0.80.0030.01216.92
8.0.70.0070.00016.86
8.0.60.0000.00716.84
8.0.50.0050.00316.81
8.0.30.0130.00416.92
8.0.20.0100.00917.40
8.0.10.0050.00217.02
8.0.00.0120.00716.74
7.4.330.0000.00615.08
7.4.320.0000.00716.53
7.4.300.0000.00616.54
7.4.290.0030.00316.56
7.4.280.0000.01016.47
7.4.270.0060.00016.38
7.4.260.0000.00716.46
7.4.250.0030.00616.32
7.4.240.0020.00516.49
7.4.230.0030.00316.53
7.4.220.0040.01416.51
7.4.210.0120.00316.65
7.4.200.0030.00316.33
7.4.160.0000.01616.29
7.4.150.0100.00717.40
7.4.140.0140.00717.86
7.4.130.0100.01016.47
7.4.120.0090.00916.39
7.4.110.0130.00316.38
7.4.100.0100.00716.41
7.4.90.0100.00716.55
7.4.80.0170.00019.39
7.4.70.0110.00416.39
7.4.60.0090.01216.45
7.4.50.0040.00416.19
7.4.40.0090.00816.50
7.4.30.0060.01616.61
7.4.00.0070.00714.74
7.3.330.0030.00313.09
7.3.320.0030.00312.96
7.3.310.0030.00316.29
7.3.300.0000.00716.21
7.3.290.0050.00916.20
7.3.280.0100.00716.20
7.3.270.0000.01917.40
7.3.260.0090.00916.32
7.3.250.0090.00716.40
7.3.240.0120.00616.37
7.3.230.0090.00916.39
7.3.210.0030.01316.38
7.3.200.0190.00316.11
7.3.190.0100.00616.13
7.3.180.0190.00316.17
7.3.170.0090.01216.27
7.3.160.0060.01016.29
7.2.330.0140.00316.57
7.2.320.0060.01216.49
7.2.310.0120.00616.64
7.2.300.0050.01316.58
7.2.290.0030.01716.48
7.2.60.0090.00616.82
7.2.00.0080.00419.24
7.1.200.0090.00615.52
7.1.100.0030.00818.00
7.1.70.0050.00317.13
7.1.60.0170.00719.11
7.1.50.0100.01334.71
7.1.00.0030.07722.57
7.0.200.0000.00816.81
7.0.60.0070.08021.80
7.0.50.0130.05017.85
7.0.40.0170.08019.98
7.0.30.0370.07020.20
7.0.20.0200.04020.13
7.0.10.0100.04020.21
7.0.00.0070.09020.30
5.6.280.0070.05021.12
5.6.210.0070.07020.54
5.6.200.0130.04018.25
5.6.190.0000.04720.39
5.6.180.0270.07720.62
5.6.170.0270.03720.50
5.6.160.0130.08020.53
5.6.150.0030.06318.23
5.6.140.0100.06018.16
5.6.130.0030.08718.23
5.6.120.0170.04321.02
5.6.110.0070.08020.96
5.6.100.0130.08020.97
5.6.90.0130.06321.06
5.6.80.0100.07020.50
5.5.350.0300.06320.41
5.5.340.0030.06318.03
5.5.330.0070.06320.57
5.5.320.0100.05720.32
5.5.310.0370.08020.32
5.5.300.0130.07717.99
5.5.290.0030.08317.98
5.5.280.0100.04320.64
5.5.270.0130.08020.94
5.5.260.0170.07320.64
5.5.250.0070.07320.65
5.5.240.0130.06320.15
5.4.450.0670.06319.39
5.4.440.1030.05719.70
5.4.430.0730.05319.63
5.4.420.0770.05019.48
5.4.410.0800.05319.03
5.4.400.0830.06018.87
5.4.390.0800.04718.84
5.4.380.0730.05719.13
5.4.370.0670.06019.13
5.4.360.0730.05719.15
5.4.350.0770.05319.06
5.4.340.0800.04719.30
5.4.320.0700.05719.10
5.4.310.0930.04718.86
5.4.300.0870.04719.14
5.4.290.0730.06319.30
5.4.280.0730.05718.98
5.4.270.0800.04719.14
5.4.260.0730.05319.30
5.4.250.1170.06319.00
5.4.240.1330.06019.22
5.4.230.1030.06019.14
5.4.220.1030.06318.86
5.4.210.1030.05319.25
5.4.200.1300.04319.14
5.4.190.1130.03718.86
5.4.180.0870.05018.83
5.4.170.0870.04719.29
5.4.160.0800.04319.20
5.4.150.0770.05019.00
5.4.140.1030.05016.54
5.4.130.0900.05716.56
5.4.120.0970.05016.57
5.4.110.0900.05716.60
5.4.100.1030.04316.58
5.4.90.1000.04716.28
5.4.80.0930.05316.50
5.4.70.0030.05316.44
5.4.60.0070.07016.14
5.4.50.0000.07716.53
5.4.40.0200.06716.42
5.4.30.0300.04016.21
5.4.20.0300.05316.51

preferences:
55.54 ms | 401 KiB | 5 Q