3v4l.org

run code in 300+ PHP versions simultaneously
<?php $_GET['mykey'] = null; $u = $_GET['mykey'] ?? ""; echo $u;

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)
8.3.60.0040.01116.88
8.3.50.0130.00717.80
8.3.40.0060.00918.74
8.3.30.0120.00318.61
8.3.20.0040.00420.21
8.3.10.0050.00323.69
8.3.00.0080.00019.25
8.2.180.0040.01118.18
8.2.170.0100.01022.96
8.2.160.0090.00522.14
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00417.50
8.2.110.0100.00022.13
8.2.100.0110.00018.04
8.2.90.0070.00019.22
8.2.80.0000.00817.97
8.2.70.0000.00817.50
8.2.60.0000.00818.16
8.2.50.0040.00418.07
8.2.40.0000.00719.52
8.2.30.0030.00320.61
8.2.20.0080.00017.80
8.2.10.0070.00017.98
8.2.00.0070.00018.17
8.1.280.0100.00725.92
8.1.270.0040.00424.01
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00022.66
8.1.230.0040.00717.77
8.1.220.0040.00417.78
8.1.210.0080.00018.77
8.1.200.0030.00617.35
8.1.190.0080.00017.22
8.1.180.0000.00818.10
8.1.170.0040.00418.96
8.1.160.0000.00721.88
8.1.150.0000.00718.87
8.1.140.0000.00819.48
8.1.130.0030.00317.70
8.1.120.0040.00417.36
8.1.110.0040.00417.47
8.1.100.0050.00217.40
8.1.90.0040.00417.43
8.1.80.0070.00017.45
8.1.70.0000.00717.46
8.1.60.0000.00717.47
8.1.50.0000.00817.43
8.1.40.0050.00317.54
8.1.30.0000.00817.69
8.1.20.0030.00517.69
8.1.10.0040.00417.54
8.1.00.0030.00517.46
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0030.00318.35
8.0.270.0000.00817.24
8.0.260.0000.00617.16
8.0.250.0040.00416.91
8.0.240.0040.00416.85
8.0.230.0000.00816.83
8.0.220.0000.00716.93
8.0.210.0070.00016.90
8.0.200.0000.00616.79
8.0.190.0040.00416.83
8.0.180.0000.00716.92
8.0.170.0040.00416.87
8.0.160.0030.00316.93
8.0.150.0030.00316.73
8.0.140.0070.00016.80
8.0.130.0000.00513.35
8.0.120.0070.00016.74
8.0.110.0030.00716.77
8.0.100.0030.00516.88
8.0.90.0030.00316.84
8.0.80.0080.00616.83
8.0.70.0080.00016.94
8.0.60.0070.00016.86
8.0.50.0000.00716.94
8.0.30.0090.01217.08
8.0.20.0070.01117.40
8.0.10.0040.00416.96
8.0.00.0060.01216.74
7.4.330.0000.00515.09
7.4.320.0000.00616.48
7.4.300.0000.00716.47
7.4.290.0070.00016.57
7.4.280.0060.00316.58
7.4.270.0030.00316.60
7.4.260.0060.00316.47
7.4.250.0030.00316.54
7.4.240.0000.00716.55
7.4.230.0050.00216.66
7.4.220.0140.00316.62
7.4.210.0110.00316.68
7.4.200.0030.00316.53
7.4.160.0090.00616.59
7.4.150.0130.00617.40
7.4.140.0140.00917.86
7.4.130.0070.00916.50
7.4.120.0140.00416.52
7.4.110.0100.00716.47
7.4.100.0190.00316.54
7.4.90.0160.00016.46
7.4.80.0100.01419.39
7.4.70.0030.01316.43
7.4.60.0090.00616.47
7.4.50.0000.00916.55
7.4.40.0130.01016.53
7.4.30.0070.01116.43
7.4.00.0030.01314.66
7.3.330.0020.00213.13
7.3.320.0020.00213.01
7.3.310.0050.00216.30
7.3.300.0060.00016.29
7.3.290.0070.00916.25
7.3.280.0090.01016.30
7.3.270.0100.01417.40
7.3.260.0080.00816.48
7.3.250.0090.01016.32
7.3.240.0100.00716.41
7.3.230.0140.00316.39
7.3.210.0070.01016.24
7.3.200.0090.00616.44
7.3.190.0130.00316.47
7.3.180.0100.00716.60
7.3.170.0040.01116.27
7.3.160.0150.00616.34
7.2.330.0090.00916.51
7.2.320.0080.00916.36
7.2.310.0100.01016.70
7.2.300.0120.00616.38
7.2.290.0170.00716.29
7.2.60.0070.01016.37
7.2.00.0080.00419.43
7.1.200.0030.00715.75
7.1.100.0040.00817.78
7.1.70.0000.00917.13
7.1.60.0100.01419.43
7.1.50.0180.00316.93
7.1.00.0030.07722.48
7.0.200.0180.00914.66
7.0.60.0000.04319.85
7.0.50.0070.08017.86
7.0.40.0170.08020.09
7.0.30.0300.07020.32
7.0.20.0300.06720.09
7.0.10.0030.04320.21
7.0.00.0130.08320.12
5.6.280.0030.05021.10
5.6.210.0070.06720.66
5.6.200.0070.06718.14
5.6.190.0030.04320.57
5.6.180.0470.07320.43
5.6.170.0270.06020.52
5.6.160.0070.09020.45
5.6.150.0070.07318.19
5.6.140.0130.07018.20
5.6.130.0030.08718.15
5.6.120.0070.08321.14
5.6.110.0030.04721.11
5.6.100.0070.05721.00
5.6.90.0000.04320.96
5.6.80.0070.07720.39
5.5.350.0270.04720.39
5.5.340.0100.07718.05
5.5.330.0070.04320.43
5.5.320.0130.04320.37
5.5.310.0330.07720.50
5.5.300.0070.08017.98
5.5.290.0030.04717.91
5.5.280.0100.05320.98
5.5.270.0070.03720.86
5.5.260.0130.06320.75
5.5.250.0030.08320.79
5.5.240.0000.08020.23
5.4.450.0870.06319.61
5.4.440.0770.07319.45
5.4.430.0830.07019.46
5.4.420.0800.07019.62
5.4.410.0800.08319.07
5.4.400.0830.07319.15
5.4.390.0800.05718.98
5.4.380.0800.05719.15
5.4.370.0770.05319.15
5.4.360.0870.07319.08
5.4.350.0670.05719.06
5.4.340.0630.06319.30
5.4.320.0670.05318.78
5.4.310.0630.05319.21
5.4.300.0800.04718.98
5.4.290.0830.06318.98
5.4.280.0930.06319.15
5.4.270.0830.06319.05
5.4.260.1000.06019.28
5.4.250.0700.07318.86
5.4.240.0600.06019.03
5.4.230.0600.07318.97
5.4.220.0730.04719.35
5.4.210.0730.07019.12
5.4.200.0770.07318.87
5.4.190.0870.06718.86
5.4.180.0900.06319.05
5.4.170.0970.06018.82
5.4.160.0870.06718.81
5.4.150.0500.07019.28
5.4.140.0100.07016.56
5.4.130.0770.06316.57
5.4.120.0530.07016.50
5.4.110.0700.06016.25
5.4.100.0730.06316.61
5.4.90.0770.06716.20
5.4.80.0930.04016.61
5.4.70.0170.06316.63
5.4.60.0730.05716.49
5.4.50.0700.06016.57
5.4.40.0230.05316.59
5.4.30.0400.06716.59
5.4.20.0730.03716.21
5.4.10.0470.06016.24
5.4.00.0630.07016.17

preferences:
39.24 ms | 400 KiB | 5 Q