3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('A', 1); if(defined('A')) { function a() { echo "hello from `".__FUNCTION__."`\n"; } } if(defined('B')) { function b() { echo "hello from `".__FUNCTION__."`\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)
8.3.60.0040.01118.30
8.3.50.0050.01022.11
8.3.40.0170.00318.79
8.3.30.0070.00719.17
8.3.20.0080.00020.15
8.3.10.0040.00421.85
8.3.00.0040.00417.93
8.2.180.0090.00916.63
8.2.170.0110.00722.96
8.2.160.0100.00320.35
8.2.150.0070.01024.18
8.2.140.0080.00024.66
8.2.130.0140.00326.16
8.2.120.0070.00021.09
8.2.110.0040.00821.05
8.2.100.0090.00317.91
8.2.90.0040.00417.84
8.2.80.0040.00417.97
8.2.70.0060.00317.38
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0040.00418.28
8.2.30.0040.00718.16
8.2.20.0040.00417.68
8.2.10.0030.00518.07
8.2.00.0030.00517.77
8.1.280.0180.00025.92
8.1.270.0040.00422.10
8.1.260.0030.00626.35
8.1.250.0110.00428.09
8.1.240.0060.00322.48
8.1.230.0040.00720.97
8.1.220.0000.00817.74
8.1.210.0000.00818.81
8.1.200.0090.00017.23
8.1.190.0000.00817.25
8.1.180.0030.00618.10
8.1.170.0030.00518.67
8.1.160.0040.00422.08
8.1.150.0050.00318.84
8.1.140.0000.00717.38
8.1.130.0070.00017.83
8.1.120.0000.00717.46
8.1.110.0030.00517.37
8.1.100.0070.00017.39
8.1.90.0090.00017.34
8.1.80.0000.00817.31
8.1.70.0040.00417.30
8.1.60.0040.00417.58
8.1.50.0000.00817.48
8.1.40.0040.00417.45
8.1.30.0000.00917.54
8.1.20.0040.00417.63
8.1.10.0030.00517.57
8.1.00.0080.00017.42
8.0.300.0000.00719.90
8.0.290.0060.00316.75
8.0.280.0070.00018.47
8.0.270.0040.00417.20
8.0.260.0070.00017.29
8.0.250.0040.00417.04
8.0.240.0000.00717.02
8.0.230.0030.00316.94
8.0.220.0030.00316.95
8.0.210.0000.00716.86
8.0.200.0070.00017.05
8.0.190.0070.00016.97
8.0.180.0050.00316.89
8.0.170.0040.00417.01
8.0.160.0030.00316.94
8.0.150.0000.00716.89
8.0.140.0000.00716.88
8.0.130.0000.00813.46
8.0.120.0040.00416.81
8.0.110.0040.00416.80
8.0.100.0000.00716.88
8.0.90.0030.00516.86
8.0.80.0060.01516.86
8.0.70.0030.00517.04
8.0.60.0040.00416.88
8.0.50.0000.00716.84
8.0.30.0120.01017.06
8.0.20.0120.00817.40
8.0.10.0040.00417.04
8.0.00.0130.00716.73
7.4.330.0000.00615.09
7.4.320.0030.00316.43
7.4.300.0070.00016.44
7.4.290.0030.00316.50
7.4.280.0030.00316.52
7.4.270.0000.00716.51
7.4.260.0030.00316.51
7.4.250.0070.00016.45
7.4.240.0030.00316.50
7.4.230.0000.00716.32
7.4.220.0100.00716.47
7.4.210.0030.01716.47
7.4.200.0000.00716.38
7.4.160.0110.00616.63
7.4.150.0050.01417.40
7.4.140.0130.00417.86
7.4.130.0100.01016.44
7.4.120.0050.01216.42
7.4.110.0140.00716.45
7.4.100.0130.00316.59
7.4.90.0060.01216.38
7.4.80.0040.01419.39
7.4.70.0110.00716.48
7.4.60.0100.01016.54
7.4.50.0050.00316.18
7.4.40.0130.00816.45
7.4.30.0060.01016.63
7.4.00.0080.01015.09
7.3.330.0000.00613.26
7.3.320.0000.00513.27
7.3.310.0040.00416.30
7.3.300.0070.00016.22
7.3.290.0100.00316.37
7.3.280.0100.01016.31
7.3.270.0100.01017.40
7.3.260.0070.01016.42
7.3.240.0060.01216.47
7.3.230.0060.01016.39
7.3.210.0140.00616.39
7.3.200.0060.01319.39
7.3.190.0060.01016.27
7.3.180.0160.00316.34
7.3.170.0030.01916.48
7.3.160.0120.00416.25
7.3.120.0110.00614.80
7.3.110.0030.01414.84
7.3.100.0160.00014.68
7.3.90.0070.00714.83
7.3.80.0070.00714.72
7.3.70.0090.00014.86
7.3.60.0070.00714.85
7.3.50.0040.01414.58
7.3.40.0040.01114.80
7.3.30.0040.00714.79
7.3.20.0030.00916.61
7.3.10.0060.00316.65
7.3.00.0040.01116.40
7.2.330.0080.00816.41
7.2.320.0040.01416.65
7.2.310.0030.01316.29
7.2.300.0100.00716.74
7.2.290.0090.00916.75
7.2.250.0070.01115.18
7.2.240.0030.01715.09
7.2.230.0040.01114.62
7.2.220.0040.00815.09
7.2.210.0060.01014.75
7.2.200.0080.00415.12
7.2.190.0100.00615.17
7.2.180.0070.01114.91
7.2.170.0060.01214.89
7.2.60.0090.00616.92
7.2.00.0060.00319.48
7.1.330.0040.01115.48
7.1.320.0060.00915.83
7.1.310.0000.01315.73
7.1.300.0080.01215.77
7.1.290.0100.00715.63
7.1.280.0070.01015.68
7.1.270.0040.00815.54
7.1.260.0060.00615.73
7.1.200.0000.01115.71
7.1.100.0080.00818.11
7.1.70.0090.00316.99
7.1.60.0100.01419.25
7.1.50.0070.01416.88
7.1.00.0030.07722.39
7.0.200.0000.01016.73
7.0.140.0000.07722.16
7.0.60.0070.03720.02
7.0.50.0070.03717.85
7.0.40.0100.08320.32
7.0.30.0330.07020.12
7.0.20.0330.06720.26
7.0.10.0030.06720.07
7.0.00.0030.08720.24
5.6.280.0000.07721.10
5.6.210.0070.06020.70
5.6.200.0100.07718.19
5.6.190.0030.04320.50
5.6.180.0400.07320.39
5.6.170.0270.07320.57
5.6.160.0170.07720.50
5.6.150.0130.07318.19
5.6.140.0100.07718.19
5.6.130.0100.03718.18
5.6.120.0030.06721.00
5.6.110.0070.09020.99
5.6.100.0070.07020.99
5.6.90.0070.04021.00
5.6.80.0200.07020.44
5.5.350.4300.03720.32
5.5.340.0030.03718.05
5.5.330.0030.04020.31
5.5.320.0300.05020.24
5.5.310.0370.07320.30
5.5.300.0100.07718.02
5.5.290.0100.08018.04
5.5.280.0070.08720.96
5.5.270.0070.05720.77
5.5.260.0170.07320.68
5.5.250.0100.08020.55
5.5.240.0030.08020.15
5.4.450.0800.06319.17
5.4.440.0630.07019.21
5.4.430.0530.06319.35
5.4.420.0530.05719.53
5.4.410.0670.05319.15
5.4.400.0830.04019.22
5.4.390.0770.05019.18
5.4.380.0300.04018.75
5.4.370.0030.04318.68
5.4.360.0070.05718.48
5.4.350.0150.07812.02
5.4.340.0150.07812.02
5.4.320.0100.04112.51
5.4.310.0090.03612.50
5.4.300.0060.03812.50
5.4.290.0090.04212.50
5.4.280.0070.03512.40
5.4.270.0060.03812.40
5.4.260.0060.04112.40
5.4.250.0080.03612.40
5.4.240.0060.03712.40
5.4.230.0030.04512.39
5.4.220.0050.03812.39
5.4.210.0030.03912.39
5.4.200.0100.05012.39
5.4.190.0040.03812.38
5.4.180.0070.03612.39
5.4.170.0050.03612.39
5.4.160.0080.03312.39
5.4.150.0030.03812.39
5.4.140.0080.03712.07
5.4.130.0080.03312.06
5.4.120.0050.03712.02
5.4.110.0040.03612.01
5.4.100.0060.03412.01
5.4.90.0070.03612.02
5.4.80.0070.03612.01
5.4.70.0030.03612.01
5.4.60.0030.03712.01
5.4.50.0080.03412.01
5.4.40.0100.03212.00
5.4.30.0110.03112.00
5.4.20.0100.03311.99
5.4.10.0060.03312.00
5.4.00.0070.03511.48
5.3.290.0080.03912.80
5.3.280.0080.03712.70
5.3.270.0070.03812.72
5.3.260.0040.04012.72
5.3.250.0050.03712.72
5.3.240.0070.03912.72
5.3.230.0080.03512.71
5.3.220.0050.03712.68
5.3.210.0060.03912.68
5.3.200.0100.03112.68
5.3.190.0080.03512.68
5.3.180.0080.03412.67
5.3.170.0040.03812.67
5.3.160.0040.03812.68
5.3.150.0070.03912.67
5.3.140.0100.03312.66
5.3.130.0060.03912.65
5.3.120.0100.03512.65
5.3.110.0050.04012.66
5.3.100.0050.03712.12
5.3.90.0080.03412.11
5.3.80.0060.03512.09
5.3.70.0050.03612.09
5.3.60.0060.03512.09
5.3.50.0070.03412.04
5.3.40.0060.03612.02
5.3.30.0090.03111.98
5.3.20.0050.03511.77
5.3.10.0060.03311.74
5.3.00.0020.04011.72
5.2.170.0030.0319.22
5.2.160.0070.0269.23
5.2.150.0030.0329.22
5.2.140.0080.0329.22
5.2.130.0030.0319.18
5.2.120.0040.0299.18
5.2.110.0060.0279.18
5.2.100.0090.0239.18
5.2.90.0060.0289.18
5.2.80.0040.0309.18
5.2.70.0040.0339.18
5.2.60.0040.0319.13
5.2.50.0060.0309.10
5.2.40.0050.0289.08
5.2.30.0050.0299.05
5.2.20.0030.0309.04
5.2.10.0020.0318.95
5.2.00.0030.0308.81
5.1.60.0030.0258.09
5.1.50.0020.0268.09
5.1.40.0030.0258.07
5.1.30.0050.0248.42
5.1.20.0050.0268.44
5.1.10.0040.0268.17
5.1.00.0020.0278.17
5.0.50.0040.0206.64
5.0.40.0020.0226.50
5.0.30.0020.0326.32
5.0.20.0040.0186.28
5.0.10.0020.0216.26
5.0.00.0010.0346.25
4.4.90.0030.0154.78
4.4.80.0020.0164.76
4.4.70.0020.0164.75
4.4.60.0020.0164.75
4.4.50.0040.0144.77
4.4.40.0050.0264.71
4.4.30.0010.0174.76
4.4.20.0050.0144.85
4.4.10.0010.0174.85
4.4.00.0020.0254.76
4.3.110.0030.0154.67
4.3.100.0020.0154.66
4.3.90.0040.0134.63
4.3.80.0020.0244.59
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0154.62
4.3.40.0030.0244.53
4.3.30.0040.0143.30
4.3.20.0020.0163.28
4.3.10.0010.0163.24
4.3.00.0130.0238.44

preferences:
43.24 ms | 400 KiB | 5 Q