3v4l.org

run code in 300+ PHP versions simultaneously
<?php $z['a'] = 'a'; var_dump ($z['b'] ?? null); var_dump ($z['b'] ?? '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)
8.3.70.0090.00616.50
8.3.60.0130.00718.43
8.3.50.0100.00718.18
8.3.40.0120.00618.47
8.3.30.0120.00618.71
8.3.20.0040.00418.85
8.3.10.0040.00421.60
8.3.00.0000.00819.68
8.2.190.0110.00716.58
8.2.180.0090.00618.29
8.2.170.0080.00822.96
8.2.160.0120.00620.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00819.82
8.2.120.0000.00726.35
8.2.110.0050.00521.91
8.2.100.0030.00918.03
8.2.90.0060.00617.75
8.2.80.0080.00018.78
8.2.70.0000.00817.93
8.2.60.0000.00817.93
8.2.50.0030.00619.79
8.2.40.0040.00418.93
8.2.30.0080.00419.42
8.2.20.0000.00717.90
8.2.10.0050.00218.04
8.2.00.0000.00719.29
8.1.280.0180.00525.92
8.1.270.0060.00323.82
8.1.260.0040.00426.35
8.1.250.0100.00328.09
8.1.240.0000.00920.70
8.1.230.0090.00319.11
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0050.00317.35
8.1.190.0000.01017.35
8.1.180.0060.00318.10
8.1.170.0060.00318.61
8.1.160.0040.00418.66
8.1.150.0090.00018.62
8.1.140.0030.00517.59
8.1.130.0080.00018.93
8.1.120.0000.00717.34
8.1.110.0080.00017.30
8.1.100.0040.00417.30
8.1.90.0040.00417.30
8.1.80.0040.00717.35
8.1.70.0030.00317.22
8.1.60.0030.00517.44
8.1.50.0090.00317.45
8.1.40.0040.00417.32
8.1.30.0000.00917.48
8.1.20.0070.00017.53
8.1.10.0000.00717.31
8.1.00.0050.00217.36
8.0.300.0060.00619.64
8.0.290.0000.00816.63
8.0.280.0000.00718.21
8.0.270.0000.01017.11
8.0.260.0030.00717.12
8.0.250.0040.00416.87
8.0.240.0030.00316.77
8.0.230.0060.00316.79
8.0.220.0000.00816.80
8.0.210.0030.00316.80
8.0.200.0080.00016.68
8.0.190.0080.00016.69
8.0.180.0040.00416.77
8.0.170.0000.00916.65
8.0.160.0030.00516.76
8.0.150.0000.00716.80
8.0.140.0030.00516.71
8.0.130.0050.00013.12
8.0.120.0070.00016.73
8.0.110.0040.00416.55
8.0.100.0030.00316.77
8.0.90.0030.00316.71
8.0.80.0060.00916.71
8.0.70.0040.00416.62
8.0.60.0030.00516.55
8.0.50.0040.00416.73
8.0.30.0080.01216.98
8.0.20.0160.00317.40
8.0.10.0070.00016.93
8.0.00.0140.00516.75
7.4.330.0000.00515.55
7.4.320.0030.00316.41
7.4.300.0060.00016.57
7.4.290.0000.00716.45
7.4.280.0000.00716.51
7.4.270.0050.00216.57
7.4.260.0000.00716.46
7.4.250.0030.00316.38
7.4.240.0000.00816.36
7.4.230.0000.00716.41
7.4.220.0070.00016.24
7.4.210.0100.00816.57
7.4.200.0000.00716.34
7.4.160.0100.00716.54
7.4.140.0080.00917.86
7.4.130.0120.00816.43
7.4.120.0120.00716.48
7.4.110.0120.00916.26
7.4.100.0070.01016.45
7.4.90.0090.00916.50
7.4.80.0150.00919.39
7.4.70.0070.01016.46
7.4.60.0060.00916.53
7.4.50.0080.00716.10
7.4.40.0160.00716.23
7.4.00.0070.00714.81
7.3.330.0020.00212.94
7.3.320.0040.00413.08
7.3.310.0030.00316.12
7.3.300.0040.00416.18
7.3.290.0000.00716.23
7.3.280.0080.00816.21
7.3.260.0120.00516.27
7.3.240.0130.00516.49
7.3.230.0120.00616.18
7.3.210.0090.00916.50
7.3.200.0090.01316.43
7.3.190.0100.00616.61
7.3.180.0100.00716.55
7.3.170.0110.00616.18
7.3.160.0030.01316.15
7.3.120.0000.01814.73
7.3.110.0100.00715.04
7.3.100.0130.00314.86
7.3.90.0070.00314.72
7.3.80.0030.00714.50
7.3.70.0070.00714.79
7.3.60.0040.01214.73
7.3.50.0070.01014.57
7.3.40.0100.00614.56
7.3.30.0110.00414.89
7.3.20.0030.00916.45
7.3.10.0100.00316.60
7.3.00.0060.00916.45
7.2.330.0160.00316.65
7.2.320.0130.00616.73
7.2.310.0100.01016.64
7.2.300.0070.01016.16
7.2.290.0060.01116.27
7.2.240.0040.01114.89
7.2.230.0090.00614.68
7.2.220.0060.00615.12
7.2.210.0070.00315.09
7.2.200.0120.00314.96
7.2.190.0040.00715.04
7.2.180.0070.01015.12
7.2.170.0000.01515.18
7.2.160.0070.00714.91
7.2.150.0090.00616.80
7.2.140.0070.00716.94
7.2.130.0060.00616.84
7.2.120.0030.01116.95
7.2.110.0120.00316.85
7.2.100.0030.00916.71
7.2.90.0040.00716.98
7.2.80.0040.00816.98
7.2.70.0040.01516.88
7.2.60.0090.00916.71
7.2.50.0070.00516.78
7.2.40.0740.01117.57
7.2.30.0660.00817.56
7.2.20.0580.01117.52
7.2.10.0760.00917.63
7.2.00.0840.00917.42
7.1.330.0070.01015.84
7.1.320.0080.00615.64
7.1.310.0060.00815.89
7.1.300.0030.01215.85
7.1.290.0060.00615.84
7.1.280.0060.01015.74
7.1.270.0100.00315.94
7.1.260.0040.01215.79
7.1.250.0040.00815.88
7.1.200.0070.00715.71
7.1.160.1520.00816.94
7.1.150.1170.00916.77
7.1.140.0820.00816.96
7.1.130.1390.00816.94
7.1.120.1210.00816.90
7.1.110.1580.01216.29
7.1.100.1370.00616.09
7.1.90.1430.00916.04
7.1.80.1300.00816.28
7.1.70.1200.00815.16
7.1.60.1520.01133.14
7.1.50.1550.01332.87
7.1.40.1650.01132.51
7.1.30.1400.01032.52
7.1.20.1560.01132.67
7.1.10.1440.00614.71
7.1.00.1150.00914.80

preferences:
62.21 ms | 401 KiB | 5 Q