3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('A', 1); define('B', 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)
8.3.60.0090.00918.43
8.3.50.0080.01121.91
8.3.40.0100.01018.66
8.3.30.0070.00718.84
8.3.20.0040.00420.04
8.3.10.0040.00421.85
8.3.00.0040.00417.91
8.2.180.0070.01418.21
8.2.170.0120.00322.96
8.2.160.0100.00320.48
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00821.18
8.2.110.0000.00920.91
8.2.100.0080.00417.91
8.2.90.0000.00819.02
8.2.80.0050.00317.97
8.2.70.0060.00317.80
8.2.60.0000.00817.93
8.2.50.0030.00618.07
8.2.40.0000.00718.22
8.2.30.0060.00318.00
8.2.20.0080.00017.59
8.2.10.0040.00417.95
8.2.00.0080.00017.64
8.1.280.0130.00325.92
8.1.270.0040.00423.91
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0060.00321.24
8.1.230.0030.00718.83
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0000.00817.23
8.1.190.0090.00916.63
8.1.180.0080.00018.10
8.1.170.0040.00418.64
8.1.160.0000.00722.06
8.1.150.0040.00418.71
8.1.140.0000.00717.29
8.1.130.0040.00417.75
8.1.120.0040.00317.23
8.1.110.0040.00417.35
8.1.100.0040.00417.40
8.1.90.0050.00517.31
8.1.80.0000.00817.42
8.1.70.0030.00317.35
8.1.60.0080.00017.39
8.1.50.0000.00817.46
8.1.40.0000.00717.53
8.1.30.0030.00517.53
8.1.20.0000.00817.62
8.1.10.0040.00417.37
8.1.00.0000.00717.30
8.0.300.0080.00018.77
8.0.290.0000.00716.63
8.0.280.0070.00018.23
8.0.270.0030.00317.06
8.0.260.0000.00617.14
8.0.250.0070.00016.89
8.0.240.0030.00316.82
8.0.230.0000.00816.93
8.0.220.0030.00316.86
8.0.210.0000.00716.67
8.0.200.0000.00716.90
8.0.190.0080.00016.84
8.0.180.0040.00416.79
8.0.170.0070.00016.82
8.0.160.0030.00316.89
8.0.150.0070.00016.74
8.0.140.0040.00416.78
8.0.130.0000.00513.27
8.0.120.0020.00516.68
8.0.110.0000.00816.87
8.0.100.0070.00016.93
8.0.90.0000.00816.91
8.0.80.0000.01616.81
8.0.70.0040.00416.71
8.0.60.0000.00816.81
8.0.50.0050.00316.73
8.0.30.0070.01416.95
8.0.20.0110.00817.40
8.0.10.0030.00516.90
8.0.00.0080.01216.68
7.4.330.0030.00315.00
7.4.320.0070.00016.59
7.4.300.0030.00316.45
7.4.290.0030.00316.54
7.4.280.0030.00316.55
7.4.270.0070.00016.54
7.4.260.0030.00316.57
7.4.250.0000.00816.54
7.4.240.0030.00316.55
7.4.230.0000.00616.44
7.4.220.0090.00916.53
7.4.210.0060.01016.51
7.4.200.0030.00316.46
7.4.160.0200.01016.52
7.4.150.0170.00717.40
7.4.140.0100.00717.86
7.4.130.0080.00916.43
7.4.120.0100.01016.49
7.4.110.0120.00916.25
7.4.100.0100.01316.66
7.4.90.0070.01016.51
7.4.80.0130.00719.39
7.4.70.0080.00816.48
7.4.60.0030.01316.52
7.4.50.0030.00516.36
7.4.40.0130.01016.39
7.4.30.0070.01016.59
7.4.00.0090.00814.69
7.3.330.0030.00313.27
7.3.320.0020.00213.27
7.3.310.0000.00716.26
7.3.300.0030.00316.07
7.3.290.0030.01216.22
7.3.280.0080.01016.20
7.3.270.0090.00917.40
7.3.260.0080.00816.29
7.3.250.0060.01316.33
7.3.240.0110.01116.46
7.3.230.0100.00616.39
7.3.210.0090.01216.33
7.3.200.0060.00919.39
7.3.190.0070.01016.43
7.3.180.0060.00916.14
7.3.170.0130.00416.53
7.3.160.0100.00716.45
7.3.120.0080.00714.90
7.3.110.0050.01014.96
7.3.100.0050.00814.67
7.3.90.0060.00514.80
7.3.80.0040.00914.85
7.3.70.0030.00814.69
7.3.60.0050.00714.76
7.3.50.0010.00714.68
7.3.40.0040.00614.73
7.3.30.0050.01014.69
7.3.20.0030.00816.43
7.3.10.0060.00816.56
7.3.00.0050.00716.52
7.2.330.0110.00616.43
7.2.320.0120.00616.40
7.2.310.0110.00616.64
7.2.300.0060.01016.83
7.2.290.0090.00716.62
7.2.250.0090.00815.05
7.2.240.0050.01314.86
7.2.230.0070.00914.95
7.2.220.0090.00514.97
7.2.210.0090.00414.96
7.2.200.0030.01014.82
7.2.190.0050.00814.92
7.2.180.0080.00514.84
7.2.170.0070.00814.84
7.2.130.0130.00316.77
7.2.120.0070.00716.70
7.2.110.0030.01016.62
7.2.100.0030.01216.75
7.2.90.0000.01016.83
7.2.80.0040.01116.75
7.2.70.0060.00816.64
7.2.60.0060.00916.67
7.2.50.0100.00316.73
7.2.40.0090.00616.54
7.2.30.0040.01116.62
7.2.20.0080.00616.77
7.2.10.0100.00716.79
7.2.00.0070.00918.07
7.1.330.0100.00415.80
7.1.320.0080.00215.71
7.1.310.0040.01015.81
7.1.300.0040.00415.65
7.1.290.0060.00615.65
7.1.280.0040.00815.62
7.1.270.0070.00715.85
7.1.260.0020.00815.50
7.1.250.0130.00315.61
7.1.100.0040.00817.96
7.1.70.0030.01016.75
7.1.60.0180.00619.25
7.1.50.0070.01416.84
7.1.00.0030.07722.30
7.0.200.0030.00616.85
7.0.140.0000.08022.00
7.0.60.0030.04320.05
7.0.50.0070.03717.96
7.0.40.0130.07020.11
7.0.30.0430.06320.21
7.0.20.0400.07020.23
7.0.10.0070.09020.33
7.0.00.0170.07720.05
5.6.280.0070.07020.93
5.6.210.0170.04020.50
5.6.200.0200.06018.14
5.6.190.0030.04320.49
5.6.180.0330.07320.33
5.6.170.0230.08020.55
5.6.160.0100.07020.72
5.6.150.0070.05018.12
5.6.140.0030.08318.14
5.6.130.0100.04718.15
5.6.120.0170.07321.00
5.6.110.0100.08320.98
5.6.100.0000.08321.11
5.6.90.0000.04321.11
5.6.80.0070.08020.38
5.5.350.4130.04020.33
5.5.340.0000.04317.98
5.5.330.0070.04320.40
5.5.320.0200.04720.27
5.5.310.0400.05720.31
5.5.300.0170.02717.99
5.5.290.0070.08018.07
5.5.280.0000.04720.77
5.5.270.0030.08320.86
5.5.260.0170.06720.87
5.5.250.0070.08320.60
5.5.240.0070.07320.23
5.4.450.0770.06019.18
5.4.440.0630.05719.29
5.4.430.0770.05019.54
5.4.420.0570.05719.33
5.4.410.0030.05719.48
5.4.400.0800.05319.05
5.4.390.0600.05318.95
5.4.380.0100.06018.39
5.4.370.0130.04718.63
5.4.360.0200.04018.75
5.4.350.0140.05312.02
5.4.340.0080.06212.01
5.4.320.0070.03612.50
5.4.310.0060.03712.50
5.4.300.0080.04812.51
5.4.290.0050.03812.50
5.4.280.0060.03512.40
5.4.270.0080.04112.40
5.4.260.0060.03712.40
5.4.250.0070.03612.40
5.4.240.0050.03912.39
5.4.230.0070.03712.39
5.4.220.0090.03412.39
5.4.210.0040.03712.39
5.4.200.0070.03612.39
5.4.190.0050.03712.39
5.4.180.0030.03812.39
5.4.170.0060.03512.39
5.4.160.0050.03612.39
5.4.150.0060.03612.39
5.4.140.0080.04012.07
5.4.130.0040.04212.05
5.4.120.0090.03912.02
5.4.110.0060.04012.02
5.4.100.0120.04312.02
5.4.90.0080.03712.01
5.4.80.0030.04012.02
5.4.70.0070.03312.01
5.4.60.0040.03712.01
5.4.50.0050.03712.00
5.4.40.0080.03311.99
5.4.30.0060.03512.00
5.4.20.0050.03611.99
5.4.10.0050.03512.00
5.4.00.0090.04811.48
5.3.290.0090.03812.80
5.3.280.0110.04312.71
5.3.270.0070.03912.72
5.3.260.0040.04212.71
5.3.250.0070.03712.72
5.3.240.0060.03712.72
5.3.230.0050.03812.71
5.3.220.0040.03912.68
5.3.210.0060.03812.68
5.3.200.0070.04312.68
5.3.190.0130.04512.68
5.3.180.0080.03612.67
5.3.170.0040.03912.67
5.3.160.0090.03812.67
5.3.150.0120.03212.67
5.3.140.0040.03812.66
5.3.130.0040.04012.66
5.3.120.0060.04012.66
5.3.110.0070.04012.66
5.3.100.0050.03912.12
5.3.90.0030.04012.11
5.3.80.0080.03412.09
5.3.70.0050.03712.09
5.3.60.0070.03512.08
5.3.50.0050.03612.02
5.3.40.0040.03912.02
5.3.30.0040.03711.98
5.3.20.0040.03811.76
5.3.10.0070.03411.73
5.3.00.0070.03511.72
5.2.170.0030.0329.22
5.2.160.0020.0329.22
5.2.150.0050.0309.22
5.2.140.0090.0269.21
5.2.130.0050.0299.18
5.2.120.0040.0309.18
5.2.110.0030.0319.18
5.2.100.0020.0329.18
5.2.90.0040.0309.18
5.2.80.0090.0379.17
5.2.70.0050.0429.17
5.2.60.0070.0289.13
5.2.50.0010.0369.10
5.2.40.0020.0319.07
5.2.30.0030.0339.05
5.2.20.0050.0309.04
5.2.10.0040.0298.95
5.2.00.0070.0278.81
5.1.60.0040.0258.10
5.1.50.0070.0238.09
5.1.40.0030.0258.07
5.1.30.0040.0268.41
5.1.20.0040.0278.44
5.1.10.0040.0268.16
5.1.00.0050.0258.17
5.0.50.0030.0226.64
5.0.40.0040.0196.50
5.0.30.0030.0346.32
5.0.20.0060.0196.28
5.0.10.0030.0236.26
5.0.00.0030.0326.25
4.4.90.0020.0174.78
4.4.80.0040.0154.75
4.4.70.0060.0134.75
4.4.60.0020.0164.75
4.4.50.0010.0174.77
4.4.40.0000.0284.71
4.4.30.0030.0154.76
4.4.20.0020.0174.84
4.4.10.0010.0174.85
4.4.00.0030.0244.76
4.3.110.0040.0194.67
4.3.100.0050.0124.66
4.3.90.0010.0164.63
4.3.80.0020.0244.58
4.3.70.0020.0154.63
4.3.60.0040.0134.62
4.3.50.0020.0164.63
4.3.40.0030.0244.53
4.3.30.0040.0143.30
4.3.20.0010.0173.29
4.3.10.0020.0163.25
4.3.00.0170.0208.45

preferences:
54.83 ms | 401 KiB | 5 Q