3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace bar; $a = FOO; // produces notice - undefined constants "FOO" assumed "FOO"; //$a = \FOO; // fatal error, undefined namespace constant FOO //$a = Bar\FOO; // fatal error, undefined namespace constant bar\Bar\FOO //$a = \Bar\FOO; // fatal error, undefined namespace constant Bar\FOO echo $a; ?>

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)
8.3.60.0110.00416.75
8.3.50.0120.01022.85
8.3.40.0210.00018.76
8.3.30.0100.00319.22
8.3.20.0080.00020.36
8.3.10.0040.00423.60
8.3.00.0040.00419.38
8.2.180.0110.01116.63
8.2.170.0170.00022.96
8.2.160.0110.00320.34
8.2.150.0000.00724.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00721.00
8.2.110.0040.00422.04
8.2.100.0080.00317.91
8.2.90.0050.00519.21
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0000.00817.92
8.2.50.0060.00318.07
8.2.40.0080.00019.65
8.2.30.0060.00318.11
8.2.20.0000.01017.74
8.2.10.0000.00718.11
8.2.00.0080.00017.74
8.1.280.0060.02025.92
8.1.270.0040.00423.91
8.1.260.0030.00626.35
8.1.250.0080.00028.09
8.1.240.0040.00423.82
8.1.230.0060.00619.15
8.1.220.0080.00017.76
8.1.210.0000.00818.77
8.1.200.0100.00017.13
8.1.190.0000.00817.35
8.1.180.0040.00418.10
8.1.170.0030.00518.64
8.1.160.0000.00722.00
8.1.150.0000.00718.82
8.1.140.0000.00817.38
8.1.130.0040.00417.75
8.1.120.0070.00017.29
8.1.110.0040.00417.40
8.1.100.0000.00717.34
8.1.90.0000.00817.30
8.1.80.0040.00417.44
8.1.70.0070.00017.39
8.1.60.0000.00817.48
8.1.50.0050.00317.42
8.1.40.0080.00017.46
8.1.30.0050.00317.47
8.1.20.0040.00417.43
8.1.10.0050.00217.48
8.1.00.0050.00317.37
8.0.300.0070.00018.77
8.0.290.0000.00716.63
8.0.280.0070.00018.48
8.0.270.0070.00017.30
8.0.260.0060.00017.30
8.0.250.0000.00717.07
8.0.240.0030.00317.04
8.0.230.0000.00716.88
8.0.220.0080.00016.96
8.0.210.0000.00616.95
8.0.200.0000.00716.97
8.0.190.0030.00517.05
8.0.180.0000.00716.97
8.0.170.0040.00416.93
8.0.160.0000.00717.03
8.0.150.0030.00316.94
8.0.140.0080.00016.89
8.0.130.0030.00313.36
8.0.120.0040.00416.85
8.0.110.0000.00716.98
8.0.100.0040.00416.91
8.0.90.0000.00816.92
8.0.80.0070.00716.93
8.0.70.0000.00716.77
8.0.60.0070.00016.97
8.0.50.0040.00416.89
8.0.30.0160.00617.15
8.0.20.0130.00617.40
8.0.10.0080.00016.88
8.0.00.0100.00716.67
7.4.330.0020.00315.00
7.4.320.0070.00016.57
7.4.300.0030.00316.59
7.4.290.0000.00716.59
7.4.280.0040.00416.57
7.4.270.0000.00716.64
7.4.260.0030.00616.39
7.4.250.0040.00416.41
7.4.240.0020.00516.57
7.4.230.0050.00316.41
7.4.220.0160.01016.53
7.4.210.0100.01016.60
7.4.200.0040.00416.40
7.4.160.0120.00316.49
7.4.150.0120.01217.40
7.4.140.0080.00817.86
7.4.130.0100.00716.63
7.4.120.0090.01016.47
7.4.110.0170.00016.53
7.4.100.0150.00316.57
7.4.90.0070.01016.44
7.4.80.0100.01319.39
7.4.70.0030.01416.48
7.4.60.0060.01016.52
7.4.50.0090.00016.33
7.4.40.0100.00716.31
7.4.30.0120.00316.48
7.4.00.0090.00614.98
7.3.330.0020.00213.19
7.3.320.0020.00212.98
7.3.310.0000.00716.20
7.3.300.0060.00016.24
7.3.290.0040.01016.21
7.3.280.0090.00916.27
7.3.270.0150.00317.40
7.3.260.0160.00516.64
7.3.250.0090.01016.29
7.3.240.0160.00316.25
7.3.230.0110.00616.43
7.3.210.0150.00416.38
7.3.200.0120.00419.39
7.3.190.0090.00916.39
7.3.180.0040.01216.38
7.3.170.0100.00716.32
7.3.160.0090.00616.49
7.3.120.0080.00814.70
7.3.110.0040.01214.80
7.3.100.0060.00614.89
7.3.90.0030.00814.83
7.3.80.0050.00714.64
7.3.70.0040.00914.68
7.3.60.0060.00714.77
7.3.50.0060.00614.77
7.3.40.0050.00714.76
7.3.30.0060.00614.78
7.3.20.0090.00116.63
7.3.10.0060.00716.82
7.3.00.0030.01016.68
7.2.330.0030.01516.45
7.2.320.0100.01016.38
7.2.310.0100.00716.38
7.2.300.0120.00416.42
7.2.290.0060.01216.48
7.2.250.0050.01114.77
7.2.240.0130.00715.14
7.2.230.0070.00815.11
7.2.220.0050.00714.96
7.2.210.0020.01314.75
7.2.200.0090.00614.87
7.2.190.0040.01114.93
7.2.180.0040.00915.07
7.2.170.0110.00314.93
7.2.60.0000.01416.57
7.2.00.0060.00619.16
7.1.330.0060.00915.84
7.1.320.0030.00815.82
7.1.310.0070.00715.66
7.1.300.0050.00815.70
7.1.290.0080.00615.81
7.1.280.0090.00315.66
7.1.270.0070.00515.67
7.1.260.0050.00715.74
7.1.200.0000.01315.57
7.1.70.0030.00617.17
7.1.60.0000.01417.27
7.1.50.0090.01316.73
7.1.00.0070.07322.30
7.0.200.0070.01016.61
7.0.140.0070.07021.92
7.0.60.0030.08019.91
7.0.50.0070.05017.87
7.0.40.0030.04720.14
7.0.30.0230.04020.00
7.0.20.0270.08020.33
7.0.10.0030.08020.00
7.0.00.0070.04720.13
5.6.280.0100.06721.09
5.6.210.0130.06320.52
5.6.200.0130.08018.23
5.6.190.0100.08720.63
5.6.180.0300.07020.56
5.6.170.0500.06720.47
5.6.160.0000.09320.50
5.6.150.0130.07718.13
5.6.140.0130.07718.20
5.6.130.0000.05318.22
5.6.120.0170.08321.01
5.6.110.0130.06320.97
5.6.100.0070.07021.09
5.6.90.0070.05320.96
5.6.80.0130.05320.39
5.5.350.0270.03720.43
5.5.340.0030.04717.89
5.5.330.0130.04720.47
5.5.320.0270.04720.17
5.5.310.0300.07720.29
5.5.300.0070.08318.02
5.5.290.0070.05717.94
5.5.280.0000.04320.67
5.5.270.0070.07720.63
5.5.260.0030.07720.77
5.5.250.0030.06320.68
5.5.240.0100.07720.25
5.4.450.0100.05019.38
5.4.440.0370.04019.41
5.4.430.0270.04019.13
5.4.420.0530.04019.40
5.4.410.0370.04319.26
5.4.400.0230.03719.25
5.4.390.0270.04018.83
5.4.380.0330.06018.68
5.4.370.0270.05018.66
5.4.360.0330.05018.57
5.4.350.0230.06718.50
5.4.340.0330.05318.68
5.4.320.0070.03812.45
5.4.310.0020.04112.45
5.4.300.0060.04312.45
5.4.290.0040.04012.45
5.4.280.0090.04312.35
5.4.270.0030.03912.35
5.4.260.0030.03812.35
5.4.250.0060.04112.34
5.4.240.0050.03812.35
5.4.230.0040.04012.34
5.4.220.0040.03912.34
5.4.210.0070.03312.34
5.4.200.0050.03712.34
5.4.190.0080.03312.33
5.4.180.0060.04212.33
5.4.170.0050.03612.34
5.4.160.0050.03712.34
5.4.150.0030.03912.34
5.4.140.0060.04212.02
5.4.130.0080.03312.01
5.4.120.0060.03411.97
5.4.110.0080.03211.96
5.4.100.0080.03211.96
5.4.90.0080.03411.96
5.4.80.0050.03711.96
5.4.70.0080.03911.96
5.4.60.0110.03911.96
5.4.50.0080.03611.96
5.4.40.0060.04511.95
5.4.30.0060.03411.95
5.4.20.0050.03811.95
5.4.10.0060.03311.95
5.4.00.0040.03711.43
5.3.290.0070.03912.80
5.3.280.0070.03912.71
5.3.270.0040.04412.73
5.3.260.0070.04112.72
5.3.250.0070.04212.72
5.3.240.0060.04312.72
5.3.230.0070.03612.70
5.3.220.0060.03712.68
5.3.210.0100.04912.68
5.3.200.0060.04212.68
5.3.190.0100.03712.68
5.3.180.0080.03712.68
5.3.170.0040.03812.67
5.3.160.0080.03812.67
5.3.150.0070.03612.67
5.3.140.0090.04312.66
5.3.130.0060.04712.66
5.3.120.0060.04312.66
5.3.110.0070.03712.66
5.3.100.0050.04312.12
5.3.90.0090.03312.08
5.3.80.0060.04112.08
5.3.70.0100.03112.07
5.3.60.0060.03612.07
5.3.50.0050.03912.00
5.3.40.0050.03812.00
5.3.30.0060.03811.94
5.3.20.0070.03311.72
5.3.10.0100.03211.69
5.3.00.0060.03611.67
5.2.170.0050.0309.18
5.2.160.0060.0289.18
5.2.150.0080.0279.18
5.2.140.0060.0299.18
5.2.130.0030.0309.13
5.2.120.0050.0279.14
5.2.110.0030.0309.14
5.2.100.0050.0279.14
5.2.90.0070.0269.14
5.2.80.0070.0279.14
5.2.70.0050.0309.14
5.2.60.0060.0289.09
5.2.50.0030.0319.06
5.2.40.0070.0339.04
5.2.30.0050.0309.01
5.2.20.0040.0319.01
5.2.10.0070.0278.93
5.2.00.0090.0318.79
5.1.60.0050.0268.07
5.1.50.0060.0288.06
5.1.40.0040.0258.04
5.1.30.0030.0278.40
5.1.20.0040.0268.42
5.1.10.0030.0268.14
5.1.00.0050.0248.14
5.0.50.0050.0266.62
5.0.40.0050.0196.48
5.0.30.0030.0316.29
5.0.20.0040.0256.26
5.0.10.0060.0186.24
5.0.00.0040.0306.23
4.4.90.0030.0204.78
4.4.80.0020.0164.75
4.4.70.0030.0214.76
4.4.60.0040.0194.75
4.4.50.0020.0164.77
4.4.40.0010.0324.71
4.4.30.0010.0224.76
4.4.20.0020.0164.85
4.4.10.0050.0134.85
4.4.00.0050.0294.76
4.3.110.0060.0194.67
4.3.100.0040.0184.67
4.3.90.0030.0164.63
4.3.80.0010.0254.58
4.3.70.0010.0164.63
4.3.60.0040.0174.63
4.3.50.0020.0204.63
4.3.40.0030.0274.54
4.3.30.0030.0143.28
4.3.20.0000.0173.26
4.3.10.0010.0163.22
4.3.00.0200.01715.64

preferences:
34.37 ms | 401 KiB | 5 Q