3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($a){ echo '$a is' . (isset($a) ? '' : 'not').' set'; } echo '$b is' . (isset($b) ? '' : 'not').' set'; test($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)
8.3.40.0140.00718.75
8.3.30.0140.00018.67
8.3.20.0000.01518.64
8.3.10.0100.00018.44
8.3.00.0110.00017.59
8.2.170.0070.01422.96
8.2.160.0030.01019.29
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0140.00326.16
8.2.120.0050.00320.88
8.2.110.0070.00321.12
8.2.100.0110.00017.78
8.2.90.0040.00419.14
8.2.80.0050.00219.25
8.2.70.0030.00617.48
8.2.60.0000.00817.93
8.2.50.0030.00618.07
8.2.40.0040.00418.09
8.2.30.0000.00717.86
8.2.20.0050.00517.66
8.2.10.0070.00017.68
8.2.00.0060.00317.66
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0110.00022.48
8.1.230.0110.00020.85
8.1.220.0040.00417.74
8.1.210.0070.00418.77
8.1.200.0090.00017.22
8.1.190.0040.00417.54
8.1.180.0060.00318.10
8.1.170.0080.00018.91
8.1.160.0050.00318.74
8.1.150.0040.00418.57
8.1.140.0040.00417.29
8.1.130.0000.00717.63
8.1.120.0040.00717.41
8.1.110.0000.00717.39
8.1.100.0070.00017.38
8.1.90.0000.00717.43
8.1.80.0070.00017.33
8.1.70.0040.00417.34
8.1.60.0000.00917.34
8.1.50.0040.00417.41
8.1.40.0040.00417.46
8.1.30.0040.00417.49
8.1.20.0040.00417.52
8.1.10.0020.00517.42
8.1.00.0000.00817.37
8.0.300.0000.00820.09
8.0.290.0070.00016.75
8.0.280.0000.00718.43
8.0.270.0000.00717.10
8.0.260.0000.00716.86
8.0.250.0030.00516.88
8.0.240.0040.00416.97
8.0.230.0000.00716.95
8.0.220.0030.00516.88
8.0.210.0000.00716.92
8.0.200.0030.00316.95
8.0.190.0000.00816.84
8.0.180.0070.00016.80
8.0.170.0060.00316.92
8.0.160.0040.00416.99
8.0.150.0050.00516.82
8.0.140.0100.00016.80
8.0.130.0030.00313.32
8.0.120.0070.00016.82
8.0.110.0000.00716.78
8.0.100.0000.00716.85
8.0.90.0040.00416.93
8.0.80.0030.01216.84
8.0.70.0040.00416.89
8.0.60.0040.00416.85
8.0.50.0050.00216.70
8.0.30.0130.01317.20
8.0.20.0050.01317.14
8.0.10.0030.00516.80
8.0.00.0080.01016.79
7.4.330.0000.00612.80
7.4.320.0060.00016.28
7.4.300.0000.00716.38
7.4.290.0000.00816.45
7.4.280.0070.00016.52
7.4.270.0000.00716.48
7.4.260.0030.00313.21
7.4.250.0000.00816.45
7.4.240.0000.00716.43
7.4.230.0070.00016.43
7.4.220.0120.01616.60
7.4.210.0090.00516.49
7.4.200.0000.00816.43
7.4.190.0050.00216.40
7.4.160.0090.00616.25
7.4.150.0090.01016.38
7.4.140.0120.00816.48
7.4.130.0080.01016.41
7.4.120.0090.00916.59
7.4.110.0100.00716.59
7.4.100.0140.00316.53
7.4.90.0130.01016.37
7.4.80.0110.00619.39
7.4.70.0150.00316.32
7.4.60.0090.00916.56
7.4.50.0080.00016.39
7.4.40.0000.01516.38
7.4.30.0090.00616.61
7.4.00.0050.01215.13
7.3.330.0000.00513.08
7.3.320.0000.00513.23
7.3.310.0060.00016.34
7.3.300.0070.00016.31
7.3.290.0120.00316.29
7.3.280.0090.00716.29
7.3.270.0070.01016.36
7.3.260.0060.01316.36
7.3.250.0050.01316.51
7.3.240.0130.01016.29
7.3.230.0100.00716.61
7.3.210.0150.00616.38
7.3.200.0040.01316.59
7.3.190.0120.01016.47
7.3.180.0110.00716.29
7.3.170.0150.00316.52
7.3.160.0080.00816.59
7.3.120.0050.01014.75
7.3.110.0070.00714.98
7.3.100.0040.01114.98
7.3.90.0110.00714.88
7.3.80.0120.00415.09
7.3.70.0060.00914.65
7.3.60.0000.01214.85
7.3.50.0030.01014.98
7.3.40.0030.01014.91
7.3.30.0060.00314.90
7.3.20.0140.00016.76
7.3.10.0080.00816.65
7.3.00.0000.01616.43
7.2.330.0120.00616.42
7.2.320.0130.01016.65
7.2.310.0030.01416.70
7.2.300.0140.00416.64
7.2.290.0070.01416.65
7.2.250.0060.01214.77
7.2.240.0040.01615.13
7.2.230.0030.01014.89
7.2.220.0030.01614.86
7.2.210.0030.01214.70
7.2.200.0090.00914.76
7.2.190.0030.00714.94
7.2.180.0110.00714.71
7.2.170.0000.01715.09
7.2.00.0000.00919.45
7.1.330.0100.00715.55
7.1.320.0030.01315.75
7.1.310.0070.01015.77
7.1.300.0040.01115.86
7.1.290.0120.00015.51
7.1.280.0000.01315.78
7.1.270.0060.00615.75
7.1.260.0070.01015.73
7.1.100.0030.01017.85
7.1.70.0040.00417.00
7.1.60.0210.00419.40
7.1.50.0120.01216.79
7.1.00.0030.06322.54
7.0.200.0120.00614.84
7.0.140.0070.07021.98
7.0.120.0070.05722.23
7.0.60.0130.07720.00
7.0.50.0030.04317.85
7.0.40.0070.07320.27
7.0.30.0300.06720.18
7.0.20.0400.07720.09
7.0.10.0030.08720.23
7.0.00.0070.04020.25
5.6.210.0130.08320.65
5.6.200.0100.08018.20
5.6.190.0030.09020.77
5.6.180.3000.03320.60
5.6.170.0330.06720.39
5.6.160.0070.04720.57
5.6.150.0100.06018.14
5.6.140.0000.04718.15
5.6.130.0100.08018.16
5.6.120.0030.08321.00
5.6.110.0100.04021.12
5.6.100.0100.06021.13
5.6.90.0070.08321.01
5.6.80.0030.06020.41
5.6.70.4500.03720.39
5.5.350.0330.07720.43
5.5.340.0030.04717.99
5.5.330.0130.03320.27
5.5.320.0230.04720.32
5.5.310.0370.06720.28
5.5.300.0100.04317.97
5.5.290.0000.04317.95
5.5.280.0100.07320.80
5.5.270.0100.08320.68
5.5.260.0070.09020.64
5.5.250.0200.06320.70
5.5.240.0470.04320.16
5.4.450.0070.03719.33
5.4.440.0000.04019.18
5.4.430.0000.04019.58
5.4.420.0100.03019.24
5.4.410.0070.05719.45
5.4.400.0030.04718.86
5.4.390.0170.06718.85
5.4.380.0100.07318.85
5.4.370.0130.06718.98
5.4.360.0100.06718.98
5.4.350.0130.04019.14
5.4.340.0100.07019.24
5.4.320.0130.06318.93
5.4.310.0030.05319.15
5.4.300.0000.04718.87
5.4.290.0030.04318.98
5.4.280.0130.07019.14
5.4.270.0130.07318.92
5.4.260.0130.03319.24
5.4.250.0070.07318.97
5.4.240.0070.03719.11
5.4.230.0030.04019.20
5.4.220.0100.07019.09
5.4.210.0030.04318.84
5.4.200.0070.04318.96
5.4.190.0030.03719.23
5.4.180.0030.05319.18
5.4.170.0130.07319.20
5.4.160.0030.06718.90
5.4.150.0130.07018.82
5.4.140.0030.04716.34
5.4.130.0130.02716.39
5.4.120.0030.04016.38
5.4.110.0070.07016.31
5.4.100.0000.06016.28
5.4.90.0030.08316.39
5.4.80.0030.07316.28
5.4.70.0030.03716.36
5.4.60.0100.04016.43
5.4.50.0000.07716.44
5.4.40.0030.07016.59
5.4.30.0100.05316.40
5.4.20.0070.04716.48
5.4.10.0070.07716.44
5.4.00.0030.03715.80
5.3.290.0170.06714.67
5.3.280.0130.07314.62
5.3.270.0000.08014.63
5.3.260.0030.04714.60
5.3.250.0100.04014.75
5.3.240.0070.04714.52
5.3.230.0030.05714.68
5.3.220.0000.05314.57
5.3.210.0070.05014.72
5.3.200.0130.05314.56
5.3.190.0070.07314.62
5.3.180.0030.04014.48
5.3.170.0070.03714.61
5.3.160.0070.03714.71
5.3.150.0030.08314.57
5.3.140.0030.04014.54
5.3.130.0100.07014.54
5.3.120.0070.03714.69
5.3.110.0070.06714.70
5.3.100.0070.03313.92
5.3.90.0070.03314.02
5.3.80.0000.08014.18
5.3.70.0130.04714.02
5.3.60.0000.04013.95
5.3.50.0030.06713.95
5.3.40.0030.05014.00
5.3.30.0000.07714.06
5.3.20.0100.03713.65
5.3.10.0170.06313.68
5.3.00.0030.03713.66
5.2.170.0100.04011.18
5.2.160.0000.06011.14
5.2.150.0000.03311.07
5.2.140.0000.04711.10
5.2.130.0000.06710.99
5.2.120.0030.04311.26
5.2.110.0030.06011.06
5.2.100.0030.05011.15
5.2.90.0000.06011.26
5.2.80.0100.06311.14
5.2.70.0070.03011.15
5.2.60.0070.03710.99
5.2.50.0100.05711.02
5.2.40.0030.05011.06
5.2.30.0030.04011.01
5.2.20.0030.06711.10
5.2.10.0100.04310.91
5.2.00.0000.03710.71
5.1.60.0100.04710.14
5.1.50.0100.04710.05
5.1.40.0100.0509.88
5.1.30.0070.05010.50
5.1.20.0030.05710.23
5.1.10.0000.04310.02
5.1.00.0130.04710.12
5.0.50.0070.0378.72
5.0.40.0030.0178.72
5.0.30.0030.0478.72
5.0.20.0070.0378.72
5.0.10.0070.0378.72
5.0.00.0000.0338.72
4.4.90.0000.0308.72
4.4.80.0000.0178.72
4.4.70.0000.0278.72
4.4.60.0000.0308.72
4.4.50.0030.0178.72
4.4.40.0000.0478.72
4.4.30.0030.0378.72
4.4.20.0000.0408.72
4.4.10.0070.0278.72
4.4.00.0070.0208.72
4.3.110.0030.0338.72
4.3.100.0000.0378.72
4.3.90.0030.0308.72
4.3.80.0030.0538.72
4.3.70.0000.0378.72
4.3.60.0000.0378.72
4.3.50.0000.0308.72
4.3.40.0000.0438.72
4.3.30.0030.0308.72
4.3.20.0000.0338.72
4.3.10.0000.0408.72
4.3.00.0070.0208.72

preferences:
46.28 ms | 400 KiB | 5 Q