3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test() { echo $var, PHP_EOL; // Notice: Undefined variable: var global $var; echo $var, PHP_EOL; // blue unset($var); echo $var, PHP_EOL; // Notice: Undefined variable: var global $var; echo $var, PHP_EOL; // blue $var = 'red'; echo $var, PHP_EOL; // red unset($var); echo $var, PHP_EOL; // Notice: Undefined variable: var global $var; echo $var, PHP_EOL; // red } $var = 'blue'; echo $var, PHP_EOL; // blue test(); echo $var, PHP_EOL; // red

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)
8.3.60.0120.00616.75
8.3.50.0020.01421.98
8.3.40.0090.00618.79
8.3.30.0070.00719.08
8.3.20.0060.00320.16
8.3.10.0040.00423.48
8.3.00.0040.00419.14
8.2.180.0070.01118.29
8.2.170.0140.00722.96
8.2.160.0070.01020.38
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0050.00320.93
8.2.110.0060.00322.13
8.2.100.0090.00317.91
8.2.90.0000.00719.05
8.2.80.0000.00817.97
8.2.70.0040.00717.63
8.2.60.0080.00017.91
8.2.50.0040.00418.07
8.2.40.0000.00821.01
8.2.30.0000.00718.25
8.2.20.0000.00717.63
8.2.10.0040.00418.13
8.2.00.0000.00817.63
8.1.280.0090.00925.92
8.1.270.0000.00822.05
8.1.260.0050.00326.35
8.1.250.0050.00228.09
8.1.240.0040.00423.79
8.1.230.0090.00319.13
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0040.00717.10
8.1.190.0080.00017.23
8.1.180.0050.00318.10
8.1.170.0080.00018.54
8.1.160.0040.00422.00
8.1.150.0000.00718.63
8.1.140.0040.00417.41
8.1.130.0050.00317.87
8.1.120.0030.00317.30
8.1.110.0000.00717.46
8.1.100.0000.00817.37
8.1.90.0040.00717.30
8.1.80.0040.00417.26
8.1.70.0000.00817.31
8.1.60.0030.00517.48
8.1.50.0040.00417.43
8.1.40.0020.00517.42
8.1.30.0030.00617.56
8.1.20.0050.00317.51
8.1.10.0000.00717.54
8.1.00.0020.00517.37
8.0.300.0050.00218.77
8.0.290.0000.00817.05
8.0.280.0000.00718.36
8.0.270.0000.00817.31
8.0.260.0030.00317.31
8.0.250.0000.00716.90
8.0.240.0000.00716.97
8.0.230.0000.00716.93
8.0.220.0040.00416.89
8.0.210.0000.00816.81
8.0.200.0050.00216.92
8.0.190.0040.00416.89
8.0.180.0000.00716.80
8.0.170.0000.00716.98
8.0.160.0040.00416.92
8.0.150.0050.00316.75
8.0.140.0070.00016.72
8.0.130.0040.00413.37
8.0.120.0030.00616.84
8.0.110.0040.00416.80
8.0.100.0040.00416.80
8.0.90.0070.00016.93
8.0.80.0090.00616.87
8.0.70.0000.00716.83
8.0.60.0030.00516.81
8.0.50.0000.00716.85
8.0.30.0080.01117.14
8.0.20.0100.00917.40
8.0.10.0040.00417.08
8.0.00.0110.01116.78
7.4.330.0020.00215.00
7.4.320.0060.00316.35
7.4.300.0000.00616.49
7.4.290.0030.00316.36
7.4.280.0040.00716.50
7.4.270.0050.00316.60
7.4.260.0030.00716.39
7.4.250.0040.00416.38
7.4.240.0020.00516.45
7.4.230.0000.00716.36
7.4.220.0100.00716.63
7.4.210.0070.00916.62
7.4.200.0000.00716.59
7.4.190.0000.00716.60
7.4.160.0110.00416.47
7.4.150.0150.00317.40
7.4.140.0130.00817.86
7.4.130.0100.00716.61
7.4.120.0090.00916.48
7.4.110.0100.00716.52
7.4.100.0060.01216.63
7.4.90.0090.00916.48
7.4.80.0060.01219.39
7.4.70.0120.00616.67
7.4.60.0030.01316.55
7.4.50.0060.00316.58
7.4.40.0080.00816.59
7.4.30.0120.00916.42
7.4.00.0060.00615.16
7.3.330.0000.00613.44
7.3.320.0030.00313.39
7.3.310.0030.00316.37
7.3.300.0040.00416.38
7.3.290.0090.01216.41
7.3.280.0080.01016.32
7.3.270.0080.01117.40
7.3.260.0090.00916.66
7.3.250.0120.01216.50
7.3.240.0100.01016.52
7.3.230.0190.00316.65
7.3.210.0120.00916.59
7.3.200.0090.00919.39
7.3.190.0110.00716.42
7.3.180.0120.00916.33
7.3.170.0060.01216.66
7.3.160.0030.01216.46
7.3.120.0000.01515.05
7.3.10.0080.00916.45
7.3.00.0070.00716.02
7.2.330.0130.00616.60
7.2.320.0120.01016.57
7.2.310.0110.00616.71
7.2.300.0060.00916.59
7.2.290.0140.00316.62
7.2.130.0050.00516.55
7.2.120.0090.00616.53
7.2.110.0060.00916.54
7.2.100.0080.00316.67
7.2.90.0100.00316.64
7.2.80.0040.01116.50
7.2.70.0090.00916.55
7.2.60.0130.00316.73
7.2.50.0060.00916.70
7.2.40.0070.00716.70
7.2.30.0080.00416.84
7.2.20.0120.00316.71
7.2.10.0110.00716.46
7.2.00.0040.00918.09
7.1.250.0040.00415.42
7.1.200.0030.01015.67
7.1.100.0070.00718.07
7.1.70.0030.00917.09
7.1.60.0070.00719.46
7.1.50.0060.00616.73
7.1.00.0030.07722.31
7.0.200.0070.00416.40
7.0.140.0000.07022.19
7.0.60.0130.08321.81
7.0.50.0070.04317.84
7.0.40.0030.06720.30
7.0.30.0200.04020.07
7.0.20.0230.05020.09
7.0.10.0170.08020.08
7.0.00.0100.03720.05
5.6.280.0070.07020.96
5.6.210.0100.06020.65
5.6.200.0100.08018.18
5.6.190.0070.04320.77
5.6.180.0370.07720.66
5.6.170.0230.07720.56
5.6.160.0100.04020.70
5.6.150.0000.04018.14
5.6.140.0000.04318.13
5.6.130.0100.08318.28
5.6.120.0100.10321.15
5.6.110.0030.08721.05
5.6.100.0070.08321.04
5.6.90.0070.06020.89
5.6.80.0100.07020.53
5.5.350.3270.03020.42
5.5.340.0070.08318.07
5.5.330.0030.09020.21
5.5.320.0330.06320.27
5.5.310.0330.04320.20
5.5.300.0100.04017.98
5.5.290.0030.07717.91
5.5.280.0100.05020.84
5.5.270.0000.04320.77
5.5.260.0070.06720.86
5.5.250.0030.08020.46
5.5.240.0270.06320.24
5.4.450.0030.07319.55
5.4.440.0070.04719.40
5.4.430.0070.04719.38
5.4.420.0070.03719.41
5.4.410.0030.04719.07
5.4.400.0030.06018.85
5.4.390.0030.08019.05
5.4.380.0000.08319.06
5.4.370.0030.07719.21
5.4.360.0070.07319.19
5.4.350.0000.07718.85
5.4.340.0130.04018.89
5.4.320.0070.04019.04
5.4.310.0030.05719.18
5.4.300.0000.05318.94
5.4.290.0030.06019.21
5.4.280.0030.07318.87
5.4.270.0070.07319.03
5.4.260.0070.07019.23
5.4.250.0030.05319.21
5.4.240.0030.07319.21
5.4.230.0030.07718.82
5.4.220.0070.07319.30
5.4.210.0000.08319.18
5.4.200.0030.04719.20
5.4.190.0100.04319.14
5.4.180.0000.04719.21
5.4.170.0030.07719.13
5.4.160.0000.07019.08
5.4.150.0030.05718.97
5.4.140.0000.07016.38
5.4.130.0030.03316.50
5.4.120.0000.05016.34
5.4.110.0070.04016.40
5.4.100.0030.04016.38
5.4.90.0030.04316.55
5.4.80.0030.07016.17
5.4.70.0200.03716.53
5.4.60.0030.06716.48
5.4.50.0000.04316.51
5.4.40.0000.07716.53
5.4.30.0130.03016.34
5.4.20.0100.04716.50
5.4.10.0070.07016.38
5.4.00.0070.03715.95
5.3.290.0000.04014.64
5.3.280.0030.07014.48
5.3.270.0100.05314.60
5.3.260.0000.05714.57
5.3.250.0070.05714.57
5.3.240.0000.05014.60
5.3.230.0200.02714.51
5.3.220.0030.07314.46
5.3.210.0000.05014.48
5.3.200.0000.06314.46
5.3.190.0070.06014.55
5.3.180.0000.08014.53
5.3.170.0000.04014.64
5.3.160.0070.03714.55
5.3.150.0070.05014.53
5.3.140.0000.04714.46
5.3.130.0070.07714.45
5.3.120.0030.05314.46
5.3.110.0130.06314.55
5.3.100.0030.03714.11
5.3.90.0030.05313.98
5.3.80.0030.04714.06
5.3.70.0030.07314.06
5.3.60.0030.06014.05
5.3.50.0030.07313.86
5.3.40.0030.06713.91
5.3.30.0000.07013.98
5.3.20.0100.05013.76
5.3.10.0000.03713.87
5.3.00.0000.05713.75
5.2.170.0070.05711.05
5.2.160.0070.03311.10
5.2.150.0030.06311.05
5.2.140.0000.05311.00
5.2.130.0030.03311.02
5.2.120.0000.06011.02
5.2.110.0000.04311.10
5.2.100.0030.05711.00
5.2.90.0070.05011.02
5.2.80.0030.04011.04
5.2.70.0000.06311.05
5.2.60.0030.05311.05
5.2.50.0000.04711.09
5.2.40.0000.05310.92
5.2.30.0000.06710.88
5.2.20.0070.06011.04
5.2.10.0030.05710.78
5.2.00.0000.04710.71
5.1.60.0000.05010.67
5.1.50.0000.03310.67
5.1.40.0000.04010.67
5.1.30.0030.05310.67
5.1.20.0030.05710.67
5.1.10.0000.04010.67
5.1.00.0030.03010.67
5.0.50.0030.04310.67
5.0.40.0070.03710.67
5.0.30.0030.06710.67
5.0.20.0030.04010.67
5.0.10.0030.03310.67
5.0.00.0000.04010.67
4.4.90.0000.02310.67
4.4.80.0070.01310.67
4.4.70.0030.03010.67
4.4.60.0030.02710.67
4.4.50.0030.03010.67
4.4.40.0000.02310.67
4.4.30.0000.02310.67
4.4.20.0030.02010.67
4.4.10.0030.03310.67
4.4.00.0000.05710.67
4.3.110.0000.04010.67
4.3.100.0030.01710.67
4.3.90.0070.02010.67
4.3.80.0070.04710.67
4.3.70.0030.01710.67
4.3.60.0000.02010.67
4.3.50.0030.03010.67
4.3.40.0030.04710.67
4.3.30.0030.03710.67
4.3.20.0000.04010.67
4.3.10.0070.03310.67
4.3.00.0000.03710.67

preferences:
37.88 ms | 401 KiB | 5 Q