3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; print $a ?? 'b'; print "\n"; print $a ?: 'b'; print "\n"; print $c ?? 'a'; print "\n"; print $c ?: 'a'; print "\n"; $b = array('a' => null); print $b ?? 'c'; print "\n"; print $b ?: 'c'; print "\n"; print $b['a'] ?? 'd'; print "\n"; print $b['a'] ?: 'd'; print "\n"; print $b['c'] ?? 'e'; print "\n"; print $b['c'] ?: 'e'; print "\n"; print false ?? 'f'; print "\n"; print false ?: 'f'; print "\n";

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)
8.3.60.0140.00316.63
8.3.50.0060.01516.27
8.3.40.0110.00418.96
8.3.30.0060.00818.84
8.3.20.0050.00320.21
8.3.10.0040.00423.45
8.3.00.0050.00323.48
8.2.180.0130.00718.41
8.2.170.0090.00622.96
8.2.160.0070.00720.52
8.2.150.0050.00324.18
8.2.140.0000.00724.66
8.2.130.0000.00821.05
8.2.120.0040.00426.35
8.2.110.0070.01120.72
8.2.100.0080.00418.05
8.2.90.0030.00519.21
8.2.80.0040.00417.97
8.2.70.0030.00617.75
8.2.60.0000.00818.05
8.2.50.0080.00018.07
8.2.40.0000.00822.14
8.2.30.0000.00819.36
8.2.20.0040.00417.68
8.2.10.0070.00018.04
8.2.00.0040.00417.97
8.1.270.0070.01122.14
8.1.260.0030.00628.09
8.1.250.0040.00428.09
8.1.240.0060.00322.55
8.1.230.0040.00819.01
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0050.00517.25
8.1.190.0040.00417.11
8.1.180.0030.00618.10
8.1.170.0080.00018.35
8.1.160.0040.00420.77
8.1.150.0080.00020.61
8.1.140.0080.00019.63
8.1.130.0070.00017.70
8.1.120.0070.00017.48
8.1.110.0050.00317.36
8.1.100.0000.00817.48
8.1.90.0040.00417.47
8.1.80.0070.00017.47
8.1.70.0030.00317.39
8.1.60.0030.00617.54
8.1.50.0060.00317.40
8.1.40.0000.00817.38
8.1.30.0060.00317.63
8.1.20.0080.00017.69
8.1.10.0000.00817.58
8.1.00.0040.00417.55
8.0.300.0000.00818.77
8.0.290.0070.00016.75
8.0.280.0000.00718.38
8.0.270.0030.00317.29
8.0.260.0060.00017.21
8.0.250.0060.00016.89
8.0.240.0030.00316.88
8.0.230.0030.00316.88
8.0.220.0000.00716.82
8.0.210.0040.00416.84
8.0.200.0030.00317.00
8.0.190.0030.00617.04
8.0.180.0000.00816.91
8.0.170.0080.00016.89
8.0.160.0040.00417.05
8.0.150.0000.00716.95
8.0.140.0030.00616.77
8.0.130.0060.00013.38
8.0.120.0040.00416.84
8.0.110.0070.00016.84
8.0.100.0000.00816.78
8.0.90.0050.00216.79
8.0.80.0070.00716.87
8.0.70.0040.00416.91
8.0.60.0040.00417.02
8.0.50.0040.00416.94
8.0.30.0060.01117.00
8.0.20.0160.00517.40
8.0.10.0000.00817.17
8.0.00.0100.00816.74
7.4.330.0000.00516.71
7.4.320.0030.00316.61
7.4.300.0000.00816.50
7.4.290.0040.00416.50
7.4.280.0000.01016.45
7.4.270.0000.00816.59
7.4.260.0030.00316.59
7.4.250.0040.00416.51
7.4.240.0020.00516.56
7.4.230.0070.00016.66
7.4.220.0110.01116.37
7.4.210.0000.01716.42
7.4.200.0040.00416.55
7.4.160.0060.00916.38
7.4.150.0070.01117.40
7.4.140.0120.00617.86
7.4.130.0140.00516.56
7.4.120.0090.01216.50
7.4.110.0360.02716.39
7.4.100.0130.01016.61
7.4.90.0060.01216.69
7.4.80.0190.00619.39
7.4.70.0180.00016.47
7.4.60.0090.00616.53
7.4.50.0030.00916.53
7.4.40.0140.00616.22
7.4.30.0070.01516.43
7.4.00.0000.01715.10
7.3.330.0050.00013.14
7.3.320.0000.00513.07
7.3.310.0000.00716.26
7.3.300.0040.00416.20
7.3.290.0070.00716.40
7.3.280.0120.00716.38
7.3.270.0060.01217.40
7.3.260.0140.00316.64
7.3.250.0100.00816.48
7.3.240.0110.01116.48
7.3.230.0080.01516.40
7.3.210.0030.01316.63
7.3.200.0100.01019.39
7.3.190.0100.00916.36
7.3.180.0140.00316.43
7.3.170.0130.00416.61
7.3.160.0090.00616.59
7.2.330.0140.00316.92
7.2.320.0100.01716.46
7.2.310.0090.00916.61
7.2.300.0030.01316.73
7.2.290.0130.00916.64
7.2.60.0070.00716.59
7.2.00.0030.00919.25
7.1.200.0060.00815.82
7.1.100.0090.00617.66
7.1.70.0090.00317.00
7.1.60.0040.02119.28
7.1.50.0040.01816.54
7.1.00.0100.07022.33
7.0.200.0000.00916.81
7.0.60.0100.07721.74
7.0.50.0070.06017.82
7.0.40.0070.07020.20
7.0.30.0330.06020.12
7.0.20.0270.08320.04
7.0.10.0200.02720.18
7.0.00.0070.09020.30
5.6.280.0030.05720.76
5.6.210.0030.08320.55
5.6.200.0000.04718.19
5.6.190.0070.06320.65
5.6.180.0500.07720.48
5.6.170.0170.04720.46
5.6.160.0070.06020.55
5.6.150.0030.08718.16
5.6.140.0030.04718.15
5.6.130.0100.08018.28
5.6.120.0100.05021.12
5.6.110.0000.04320.96
5.6.100.0030.07720.88
5.6.90.0030.04320.98
5.6.80.0070.06020.35
5.5.350.4270.04020.52
5.5.340.0000.04017.92
5.5.330.0170.06720.57
5.5.320.0470.04320.29
5.5.310.0100.04720.23
5.5.300.0100.03318.07
5.5.290.0070.04018.08
5.5.280.0030.06720.65
5.5.270.0070.08320.79
5.5.260.0100.07720.79
5.5.250.0100.07720.46
5.5.240.0170.07020.26

preferences:
45.46 ms | 400 KiB | 5 Q