3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var_2 = "value"; $var = "var_2"; echo $var_1."\n"; echo $$var_2."\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)
8.3.40.0080.00818.51
8.3.30.0140.00319.07
8.3.20.0000.00720.15
8.3.10.0040.00422.00
8.3.00.0090.00022.47
8.2.170.0100.00322.96
8.2.160.0120.00320.85
8.2.150.0030.00624.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00419.36
8.2.110.0060.00322.18
8.2.100.0070.00717.91
8.2.90.0040.00418.98
8.2.80.0000.00817.97
8.2.70.0000.00817.48
8.2.60.0060.00318.05
8.2.50.0060.00318.07
8.2.40.0040.00418.09
8.2.30.0000.00717.96
8.2.20.0040.00417.67
8.2.10.0040.00419.59
8.2.00.0040.00417.80
8.1.270.0050.00323.82
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0040.00423.83
8.1.230.0060.00619.17
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0030.00617.23
8.1.190.0040.00417.53
8.1.180.0040.00818.10
8.1.170.0040.00418.64
8.1.160.0040.00422.01
8.1.150.0040.00418.55
8.1.140.0040.00417.49
8.1.130.0000.00717.82
8.1.120.0000.00717.47
8.1.110.0040.00417.52
8.1.100.0050.00317.44
8.1.90.0000.00717.40
8.1.80.0000.00717.49
8.1.70.0000.00717.40
8.1.60.0040.00417.46
8.1.50.0080.00017.40
8.1.40.0020.00517.43
8.1.30.0030.00517.63
8.1.20.0000.00917.62
8.1.10.0030.00517.44
8.1.00.0000.00717.43
8.0.300.0000.00918.77
8.0.290.0000.00717.18
8.0.280.0000.00718.39
8.0.270.0000.00717.25
8.0.260.0030.00316.78
8.0.250.0070.00016.99
8.0.240.0000.00717.02
8.0.230.0030.00317.02
8.0.220.0030.00316.91
8.0.210.0070.00016.91
8.0.200.0000.00816.90
8.0.190.0040.00416.99
8.0.180.0000.00816.93
8.0.170.0080.00016.97
8.0.160.0030.00417.03
8.0.150.0000.00716.94
8.0.140.0040.00416.89
8.0.130.0030.00313.36
8.0.120.0040.00416.80
8.0.110.0020.00516.86
8.0.100.0030.00516.93
8.0.90.0040.00416.99
8.0.80.0120.00316.94
8.0.70.0040.00417.00
8.0.60.0040.00416.89
8.0.50.0040.00416.76
8.0.30.0090.01017.10
8.0.20.0100.01217.40
8.0.10.0080.00016.97
8.0.00.0110.00916.92
7.4.330.0060.00015.10
7.4.320.0060.00016.41
7.4.300.0000.00616.52
7.4.290.0000.00716.42
7.4.280.0070.00016.50
7.4.270.0030.00316.61
7.4.260.0040.00716.48
7.4.250.0070.00016.51
7.4.240.0040.00416.51
7.4.230.0030.00316.70
7.4.220.0060.01516.61
7.4.210.0070.00816.58
7.4.200.0030.00316.66
7.4.190.0030.00316.38
7.4.160.0090.00616.49
7.4.150.0100.00717.40
7.4.140.0080.00917.86
7.4.130.0070.01116.56
7.4.120.0100.00616.53
7.4.110.0070.01016.25
7.4.100.0130.00416.55
7.4.90.0110.00616.61
7.4.80.0160.00719.39
7.4.70.0090.00616.60
7.4.60.0100.00716.36
7.4.50.0000.00816.56
7.4.40.0100.00322.77
7.4.30.0110.00616.64
7.4.00.0000.01314.74
7.3.330.0000.00613.31
7.3.320.0030.00313.23
7.3.310.0000.00616.21
7.3.300.0070.00016.28
7.3.290.0090.00616.34
7.3.280.0060.00916.35
7.3.270.0140.00317.40
7.3.260.0110.01116.42
7.3.250.0220.00016.31
7.3.240.0110.00616.55
7.3.230.0070.01016.56
7.3.210.0070.01116.48
7.3.200.0090.00919.39
7.3.190.0110.00616.27
7.3.180.0130.00916.41
7.3.170.0070.01016.42
7.3.160.0120.00316.58
7.3.120.0090.00314.90
7.3.110.0100.00715.07
7.3.100.0060.00814.89
7.3.90.0090.00314.75
7.3.80.0070.00715.09
7.3.70.0130.00715.01
7.3.60.0060.00614.68
7.3.50.0030.01214.93
7.3.40.0130.00014.84
7.3.30.0040.00814.75
7.3.20.0030.00716.73
7.3.10.0030.00616.64
7.3.00.0000.01316.85
7.2.330.0140.00316.50
7.2.320.0130.00916.66
7.2.310.0070.01116.73
7.2.300.0050.01616.55
7.2.290.0070.01016.64
7.2.240.0070.01115.02
7.2.230.0150.00314.95
7.2.220.0030.00715.00
7.2.210.0060.01215.14
7.2.200.0130.00314.99
7.2.190.0070.00415.04
7.2.180.0100.00314.74
7.2.170.0030.00915.11
7.2.160.0080.00415.20
7.2.150.0030.00716.79
7.2.140.0030.00916.93
7.2.130.0100.00316.87
7.2.120.0060.01017.02
7.2.110.0030.00516.94
7.2.100.0140.00016.99
7.2.90.0080.00416.70
7.2.80.0080.00416.92
7.2.70.0030.00516.77
7.2.60.0070.01016.73
7.2.50.0060.00616.96
7.2.40.0030.01017.04
7.2.30.0000.01116.88
7.2.20.0030.00717.02
7.2.10.0070.00317.09
7.2.00.0100.00518.10
7.1.330.0070.01115.72
7.1.320.0060.00615.80
7.1.310.0040.01115.77
7.1.300.0040.00715.79
7.1.290.0090.00615.61
7.1.280.0040.00815.75
7.1.270.0070.00415.82
7.1.260.0030.01015.72
7.1.250.0100.00315.70
7.1.200.0030.00815.69
7.1.100.0060.00318.07
7.1.70.0000.00716.95
7.1.60.0000.02019.82
7.1.50.0040.01816.82
7.1.00.0030.07722.45
7.0.200.0070.00716.71
7.0.140.0030.06322.00
7.0.60.0030.05020.02
7.0.50.0030.08717.80
7.0.40.0070.04020.12
7.0.30.0470.04720.02
7.0.20.0230.05320.19
7.0.10.0230.06320.11
7.0.00.0030.04020.20
5.6.280.0000.07721.01
5.6.210.0130.07320.43
5.6.200.0330.05318.18
5.6.190.0170.04720.60
5.6.180.0500.07320.64
5.6.170.0230.08320.47
5.6.160.0070.04020.40
5.6.150.0100.07318.14
5.6.140.0130.07718.17
5.6.130.0030.08718.20
5.6.120.0070.08321.14
5.6.110.0100.06021.02
5.6.100.0100.08021.00
5.6.90.0070.08321.09
5.6.80.0030.08020.34
5.6.70.0230.03020.36
5.5.350.0000.07020.42
5.5.340.0000.04017.92
5.5.330.0100.05320.12
5.5.320.0330.07320.28
5.5.310.0170.04020.41
5.5.300.0070.08018.02
5.5.290.0070.05717.91
5.5.280.0130.08020.85
5.5.270.0070.09020.78
5.5.260.0230.06720.86
5.5.250.0030.08320.77
5.5.240.0030.04320.14
5.4.450.0430.04719.53
5.4.440.0470.05719.39
5.4.430.0370.04019.41
5.4.420.0530.04019.13
5.4.410.0070.05718.95
5.4.400.0070.05718.51
5.4.390.0070.05318.73
5.4.380.0070.06318.68
5.4.370.0300.04318.60
5.4.360.0070.06318.56
5.4.350.0200.05318.48
5.4.340.0200.05318.46
5.4.320.0050.04012.45
5.4.310.0100.04012.45
5.4.300.0050.03912.45
5.4.290.0140.04712.45
5.4.280.0030.05612.34
5.4.270.0030.03812.32
5.4.260.0050.03712.31
5.4.250.0090.03612.32
5.4.240.0070.03712.31
5.4.230.0110.03412.31
5.4.220.0020.04112.30
5.4.210.0020.03912.30
5.4.200.0070.03612.30
5.4.190.0040.03912.30
5.4.180.0130.04412.30
5.4.170.0100.03212.31
5.4.160.0100.03112.30
5.4.150.0040.03712.30
5.4.140.0050.03811.98
5.4.130.0060.03511.98
5.4.120.0060.03511.93
5.4.110.0050.03811.93
5.4.100.0060.03611.93
5.4.90.0070.03711.93
5.4.80.0050.03811.93
5.4.70.0090.04211.92
5.4.60.0060.03411.92
5.4.50.0070.03411.92
5.4.40.0020.03911.91
5.4.30.0060.04311.91
5.4.20.0080.03311.91
5.4.10.0030.03711.91
5.4.00.0050.03611.40
5.3.290.0100.04312.80
5.3.280.0050.04112.71
5.3.270.0040.04212.73
5.3.260.0060.03912.72
5.3.250.0080.03512.72
5.3.240.0050.03812.72
5.3.230.0050.04912.71
5.3.220.0070.03512.68
5.3.210.0080.04212.68
5.3.200.0050.03812.68
5.3.190.0040.04212.68
5.3.180.0110.03712.68
5.3.170.0070.03612.67
5.3.160.0050.04212.67
5.3.150.0050.03912.67
5.3.140.0050.04112.66
5.3.130.0070.03912.65
5.3.120.0070.04012.66
5.3.110.0020.04312.66
5.3.100.0040.03912.12
5.3.90.0050.03712.08
5.3.80.0060.03612.08
5.3.70.0060.03612.07
5.3.60.0080.03412.07
5.3.50.0090.03312.00
5.3.40.0040.04012.00
5.3.30.0070.03711.94
5.3.20.0060.03411.70
5.3.10.0050.03511.66
5.3.00.0040.03911.64
5.2.170.0040.0319.14
5.2.160.0070.0279.14
5.2.150.0060.0309.14
5.2.140.0040.0329.14
5.2.130.0040.0299.11
5.2.120.0060.0349.11
5.2.110.0050.0319.11
5.2.100.0080.0299.11
5.2.90.0050.0319.11
5.2.80.0070.0329.10
5.2.70.0010.0339.09
5.2.60.0030.0309.06
5.2.50.0060.0369.02
5.2.40.0040.0339.00
5.2.30.0070.0308.97
5.2.20.0050.0288.96
5.2.10.0040.0318.89
5.2.00.0050.0308.75
5.1.60.0060.0338.03
5.1.50.0060.0318.03
5.1.40.0040.0258.01
5.1.30.0050.0258.36
5.1.20.0040.0328.38
5.1.10.0070.0238.11
5.1.00.0030.0268.11
5.0.50.0020.0226.59
5.0.40.0040.0196.44
5.0.30.0060.0286.26
5.0.20.0030.0246.23
5.0.10.0010.0236.21
5.0.00.0040.0306.20
4.4.90.0030.0164.78
4.4.80.0030.0164.76
4.4.70.0040.0154.76
4.4.60.0030.0164.75
4.4.50.0040.0144.77
4.4.40.0020.0264.71
4.4.30.0030.0164.76
4.4.20.0020.0184.85
4.4.10.0020.0174.85
4.4.00.0010.0274.76
4.3.110.0030.0154.67
4.3.100.0030.0144.66
4.3.90.0020.0204.63
4.3.80.0030.0244.58
4.3.70.0010.0164.63
4.3.60.0020.0154.63
4.3.50.0030.0164.63
4.3.40.0030.0234.53
4.3.30.0020.0163.27
4.3.20.0010.0173.25
4.3.10.0010.0163.21
4.3.00.0070.01015.07

preferences:
37.13 ms | 400 KiB | 5 Q