3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a () { static $ax = 0; function b() { static $bx = 0; echo "I am ".__FUNCTION__.". I have been called ".$bx++." times\n"; } echo "I am ".__FUNCTION__.". I have been called ".$ax++." times\n"; } echo function_exists("b") ? "b is defined\n" : "b is not defined\n"; a(); echo function_exists("b") ? "b is defined\n" : "b is not defined\n"; b(); a(); echo function_exists("b") ? "b is defined\n" : "b is not defined\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)
8.3.60.0040.01116.63
8.3.50.0120.00521.86
8.3.40.0040.01818.83
8.3.30.0070.00718.92
8.3.20.0040.00420.20
8.3.10.0080.00021.85
8.3.00.0040.00418.03
8.2.180.0110.00816.38
8.2.170.0100.00722.96
8.2.160.0030.01022.17
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0050.00320.85
8.2.110.0030.00621.99
8.2.100.0040.00817.59
8.2.90.0050.00319.05
8.2.80.0000.00917.97
8.2.70.0000.00817.50
8.2.60.0040.00417.93
8.2.50.0080.00018.07
8.2.40.0000.00818.09
8.2.30.0100.00018.11
8.2.20.0040.00417.78
8.2.10.0040.00418.04
8.2.00.0080.00017.67
8.1.280.0140.00725.92
8.1.270.0080.00022.24
8.1.260.0040.00726.35
8.1.250.0130.00628.09
8.1.240.0060.00323.84
8.1.230.0060.00619.16
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0000.01117.35
8.1.190.0000.00817.23
8.1.180.0030.00518.10
8.1.170.0000.00918.61
8.1.160.0040.00421.92
8.1.150.0070.00018.86
8.1.140.0050.00317.36
8.1.130.0070.00017.78
8.1.120.0040.00417.43
8.1.110.0040.00417.51
8.1.100.0040.00417.42
8.1.90.0030.00617.33
8.1.80.0050.00317.43
8.1.70.0070.00017.38
8.1.60.0030.00617.56
8.1.50.0030.00517.47
8.1.40.0000.00817.42
8.1.30.0030.00517.54
8.1.20.0000.00717.51
8.1.10.0000.00717.52
8.1.00.0070.00017.40
8.0.300.0080.00018.77
8.0.290.0030.00516.75
8.0.280.0030.00318.51
8.0.270.0030.00317.09
8.0.260.0070.00017.29
8.0.250.0070.00017.01
8.0.240.0030.00317.05
8.0.230.0030.00317.03
8.0.220.0050.00316.99
8.0.210.0030.00316.83
8.0.200.0030.00316.86
8.0.190.0030.00416.97
8.0.180.0080.00016.94
8.0.170.0070.00016.87
8.0.160.0030.00316.86
8.0.150.0040.00416.82
8.0.140.0000.00716.86
8.0.130.0050.00013.30
8.0.120.0000.00716.82
8.0.110.0050.00316.86
8.0.100.0040.00416.89
8.0.90.0000.00816.89
8.0.80.0130.00316.91
8.0.70.0000.00716.90
8.0.60.0050.00317.06
8.0.50.0070.00016.98
8.0.30.0090.01017.12
8.0.20.0080.01217.40
8.0.10.0040.00416.95
8.0.00.0060.01216.75
7.4.330.0060.00015.05
7.4.320.0060.00016.51
7.4.300.0060.00016.63
7.4.290.0080.00016.39
7.4.280.0030.00316.49
7.4.270.0030.00316.50
7.4.260.0000.00716.62
7.4.250.0050.00316.46
7.4.240.0030.00316.53
7.4.230.0000.00716.35
7.4.220.0140.00416.69
7.4.210.0070.00716.54
7.4.200.0040.00416.57
7.4.160.0030.01316.75
7.4.150.0090.00917.40
7.4.140.0110.00617.86
7.4.130.0090.00716.56
7.4.120.0090.01116.52
7.4.110.0140.00416.37
7.4.100.0140.00316.62
7.4.90.0080.00816.37
7.4.80.0060.01219.39
7.4.70.0140.00716.48
7.4.60.0110.00816.39
7.4.50.0040.00416.48
7.4.40.0110.00616.56
7.4.30.0030.01316.43
7.4.00.0000.01715.14
7.3.330.0030.00313.27
7.3.320.0000.00513.32
7.3.310.0080.00016.12
7.3.300.0030.00316.30
7.3.290.0060.00916.30
7.3.280.0100.00816.31
7.3.270.0160.00017.40
7.3.260.0130.00316.57
7.3.250.0130.00716.41
7.3.240.0120.00616.32
7.3.230.0060.01216.54
7.3.210.0120.00616.55
7.3.200.0120.00619.39
7.3.190.0050.01216.24
7.3.180.0040.01116.60
7.3.170.0100.00716.49
7.3.160.0130.00616.45
7.3.120.0000.00914.65
7.2.330.0090.00916.77
7.2.320.0070.01016.62
7.2.310.0130.00316.46
7.2.300.0070.00716.39
7.2.290.0030.01316.66
7.2.00.0030.01019.17
7.1.200.0080.00515.66
7.1.100.0070.00717.74
7.1.70.0070.00017.10
7.1.60.0100.01319.25
7.1.50.0100.01016.86
7.1.00.0030.07722.57
7.0.200.0030.00716.74
7.0.140.0000.07722.04
7.0.60.0000.07320.04
7.0.50.0100.04717.88
7.0.40.0130.04320.25
7.0.30.0370.07020.10
7.0.20.0200.08020.23
7.0.10.0070.05320.18
7.0.00.0200.07720.16
5.6.280.0030.07321.03
5.6.210.0030.08320.71
5.6.200.0070.06318.25
5.6.190.0000.07020.67
5.6.180.4330.03320.77
5.6.170.0300.04320.47
5.6.160.0070.04020.50
5.6.150.0100.08018.19
5.6.140.0000.04318.15
5.6.130.0070.09318.14
5.6.120.0070.06321.01
5.6.110.0130.04721.14
5.6.100.0100.05020.98
5.6.90.0070.05320.88
5.6.80.0070.08320.38
5.6.70.0370.06320.39
5.5.350.0170.07720.43
5.5.340.0070.08017.98
5.5.330.0030.04020.29
5.5.320.0330.03720.34
5.5.310.0170.03720.42
5.5.300.0030.05717.98
5.5.290.0130.07318.04
5.5.280.0030.08320.73
5.5.270.0070.03720.87
5.5.260.0070.08320.87
5.5.250.0030.04320.70
5.5.240.0030.06020.27
5.4.450.0670.06019.64
5.4.440.0570.06019.22
5.4.430.0570.06719.61
5.4.420.0600.05319.64
5.4.410.0430.05719.41
5.4.400.0730.06019.04
5.4.390.0770.05319.03
5.4.380.0230.04318.69
5.4.370.0230.04718.47
5.4.360.0100.04318.62
5.4.350.0060.05412.02
5.4.340.0090.04612.02
5.4.320.0070.03412.51
5.4.310.0030.04012.51
5.4.300.0090.03312.51
5.4.290.0070.03912.50
5.4.280.0050.03712.40
5.4.270.0030.04012.40
5.4.260.0070.03612.41
5.4.250.0070.03612.40
5.4.240.0070.03512.41
5.4.230.0080.03612.39
5.4.220.0050.03712.40
5.4.210.0050.03612.39
5.4.200.0070.03612.39
5.4.190.0060.04112.39
5.4.180.0030.04012.39
5.4.170.0040.03912.40
5.4.160.0050.03612.39
5.4.150.0060.03712.39
5.4.140.0080.03512.08
5.4.130.0050.03612.06
5.4.120.0060.03512.02
5.4.110.0080.03612.02
5.4.100.0060.03712.02
5.4.90.0060.03612.02
5.4.80.0070.03512.02
5.4.70.0030.03612.01
5.4.60.0040.03612.01
5.4.50.0060.03412.01
5.4.40.0080.03412.00
5.4.30.0040.03612.00
5.4.20.0070.03712.00
5.4.10.0060.03412.00
5.4.00.0030.03911.49
5.3.290.0070.04012.80
5.3.280.0080.03512.71
5.3.270.0070.03812.73
5.3.260.0040.04212.72
5.3.250.0060.03812.72
5.3.240.0050.03812.72
5.3.230.0040.04012.71
5.3.220.0090.03412.68
5.3.210.0070.03812.68
5.3.200.0040.03912.68
5.3.190.0090.04312.68
5.3.180.0040.04212.67
5.3.170.0090.03412.67
5.3.160.0050.04112.67
5.3.150.0070.04112.68
5.3.140.0070.03612.66
5.3.130.0050.04012.65
5.3.120.0040.04412.66
5.3.110.0070.04312.66
5.3.100.0070.03712.13
5.3.90.0100.04212.11
5.3.80.0060.03712.10
5.3.70.0050.03812.11
5.3.60.0060.03712.09
5.3.50.0080.03512.03
5.3.40.0060.03712.04
5.3.30.0060.03511.98
5.3.20.0080.03511.77
5.3.10.0060.03711.76
5.3.00.0020.04011.73
5.2.170.0050.0319.23
5.2.160.0050.0429.23
5.2.150.0070.0339.23
5.2.140.0060.0309.23
5.2.130.0060.0299.19
5.2.120.0050.0289.19
5.2.110.0040.0309.19
5.2.100.0050.0339.19
5.2.90.0030.0309.18
5.2.80.0070.0289.18
5.2.70.0030.0329.18
5.2.60.0040.0309.14
5.2.50.0050.0309.11
5.2.40.0010.0339.08
5.2.30.0050.0309.05
5.2.20.0060.0269.05
5.2.10.0050.0278.95
5.2.00.0050.0288.81
5.1.60.0030.0268.10
5.1.50.0050.0248.10
5.1.40.0070.0218.08
5.1.30.0040.0268.43
5.1.20.0060.0258.45
5.1.10.0050.0268.17
5.1.00.0030.0318.17
5.0.50.0050.0196.64
5.0.40.0060.0176.51
5.0.30.0060.0306.32
5.0.20.0100.0216.29
5.0.10.0040.0256.27
5.0.00.0060.0306.26
4.4.90.0030.0214.78
4.4.80.0050.0194.76
4.4.70.0040.0204.75
4.4.60.0020.0214.75
4.4.50.0040.0154.77
4.4.40.0050.0254.71
4.4.30.0010.0194.76
4.4.20.0040.0154.84
4.4.10.0020.0174.85
4.4.00.0040.0254.76
4.3.110.0040.0154.67
4.3.100.0030.0154.66
4.3.90.0030.0144.63
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0040.0144.63
4.3.40.0010.0264.54
4.3.30.0020.0163.31
4.3.20.0020.0163.28
4.3.10.0030.0153.25
4.3.00.0100.0238.41

preferences:
37.26 ms | 401 KiB | 5 Q