3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = '___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________'; var_dump(strlen($var)); $$var = 4; var_dump($$var);

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)
8.3.60.0110.00718.28
8.3.50.0120.01021.94
8.3.40.0150.00018.73
8.3.30.0130.00618.92
8.3.20.0060.00320.20
8.3.10.0090.00023.70
8.3.00.0040.00419.13
8.2.180.0110.00416.50
8.2.170.0070.00722.96
8.2.160.0100.00320.47
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0070.00026.16
8.2.120.0040.00422.18
8.2.110.0060.00321.04
8.2.100.0080.00417.78
8.2.90.0040.00417.72
8.2.80.0030.00517.97
8.2.70.0070.00317.38
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0040.00418.16
8.2.30.0000.00718.18
8.2.20.0050.00217.68
8.2.10.0040.00418.13
8.2.00.0080.00017.70
8.1.280.0110.00425.92
8.1.270.0060.00323.96
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00322.70
8.1.230.0090.00320.88
8.1.220.0030.00617.74
8.1.210.0000.00818.80
8.1.200.0000.00917.35
8.1.190.0050.00317.34
8.1.180.0060.00318.10
8.1.170.0080.00020.38
8.1.160.0040.00422.07
8.1.150.0040.00418.96
8.1.140.0070.00017.46
8.1.130.0000.00717.84
8.1.120.0030.00517.53
8.1.110.0050.00317.36
8.1.100.0040.00417.52
8.1.90.0000.00717.48
8.1.80.0000.00717.34
8.1.70.0030.00317.48
8.1.60.0080.00417.54
8.1.50.0050.00317.43
8.1.40.0040.00417.42
8.1.30.0040.00417.57
8.1.20.0000.00717.71
8.1.10.0000.00817.52
8.1.00.0030.00617.52
8.0.300.0040.00419.64
8.0.290.0000.00716.75
8.0.280.0000.00718.46
8.0.270.0030.00317.18
8.0.260.0000.00817.22
8.0.250.0000.00616.98
8.0.240.0000.00616.98
8.0.230.0000.00717.02
8.0.220.0070.00016.93
8.0.210.0000.00616.86
8.0.200.0000.00616.98
8.0.190.0050.00216.99
8.0.180.0050.00316.88
8.0.170.0030.00516.96
8.0.160.0030.00316.99
8.0.150.0070.00016.95
8.0.140.0070.00016.88
8.0.130.0000.00613.29
8.0.120.0050.00316.84
8.0.110.0040.00416.90
8.0.100.0000.00816.80
8.0.90.0000.00716.94
8.0.80.0140.00716.82
8.0.70.0000.00716.73
8.0.60.0030.00516.93
8.0.50.0000.00816.94
8.0.30.0090.01117.16
8.0.20.0160.00517.40
8.0.10.0000.00717.03
8.0.00.0140.00316.68
7.4.330.0030.00315.02
7.4.320.0040.00416.47
7.4.300.0030.00316.42
7.4.290.0000.00716.61
7.4.280.0000.00716.63
7.4.270.0000.00716.60
7.4.260.0030.00316.50
7.4.250.0000.00816.61
7.4.240.0030.00316.48
7.4.230.0030.00316.62
7.4.220.0060.01216.45
7.4.210.0070.00716.55
7.4.200.0070.00016.64
7.4.160.0050.01816.63
7.4.150.0180.00417.40
7.4.140.0130.00817.86
7.4.130.0100.00716.58
7.4.120.0130.00316.51
7.4.110.0080.00816.34
7.4.100.0090.01716.50
7.4.90.0000.01616.47
7.4.80.0160.00619.39
7.4.70.0130.00616.49
7.4.60.0030.01316.71
7.4.50.0000.00716.54
7.4.40.0100.00716.29
7.4.30.0130.00916.48
7.4.00.0060.00614.85
7.3.330.0020.00513.06
7.3.320.0050.00013.14
7.3.310.0050.00316.09
7.3.300.0030.00316.20
7.3.290.0040.01116.17
7.3.280.0030.01116.26
7.3.270.0140.01217.40
7.3.260.0100.00716.48
7.3.250.0130.00616.60
7.3.240.0100.01616.36
7.3.230.0030.01316.39
7.3.210.0130.00716.41
7.3.200.0090.01219.39
7.3.190.0150.00616.37
7.3.180.0060.01016.36
7.3.170.0060.00916.35
7.3.160.0030.01216.25
7.3.120.0030.01314.73
7.3.110.0070.01114.63
7.3.100.0090.00914.66
7.3.90.0070.01014.66
7.3.80.0070.00315.10
7.3.70.0040.01114.87
7.3.60.0030.01014.71
7.3.50.0100.00714.64
7.3.40.0090.00314.84
7.3.30.0060.00614.67
7.3.20.0090.00616.26
7.3.10.0030.01016.47
7.3.00.0090.00316.68
7.2.330.0100.00716.46
7.2.320.0040.01816.59
7.2.310.0060.01616.34
7.2.300.0040.01216.52
7.2.290.0120.01016.46
7.2.240.0070.01014.86
7.2.230.0100.00715.02
7.2.220.0000.01314.76
7.2.210.0120.00315.04
7.2.200.0000.01214.87
7.2.190.0040.01114.69
7.2.180.0030.01015.02
7.2.170.0060.01214.86
7.2.160.0100.00714.76
7.2.150.0030.01216.63
7.2.140.0100.00316.89
7.2.130.0120.00017.01
7.2.120.0080.00716.57
7.2.110.0040.00816.72
7.2.100.0030.01416.92
7.2.90.0090.00916.88
7.2.80.0090.00616.95
7.2.70.0070.01116.64
7.2.60.0000.01716.84
7.2.50.0120.00616.97
7.2.40.0030.01216.90
7.2.30.0150.00016.77
7.2.20.0030.01016.71
7.2.10.0080.00416.61
7.2.00.0060.00916.81
7.1.330.0000.01615.71
7.1.320.0090.00615.73
7.1.310.0100.00315.86
7.1.300.0030.01015.67
7.1.290.0100.00315.70
7.1.280.0080.00315.72
7.1.270.0080.00415.82
7.1.260.0030.00615.84
7.1.250.0040.01115.48
7.1.200.0040.00715.75
7.1.70.0000.01017.24
7.1.60.0100.01419.32
7.1.50.0180.00934.59
7.1.00.0130.06722.43
7.0.200.0030.00616.51
7.0.140.0000.07321.95
7.0.60.0070.06319.94
7.0.50.0130.07317.90
7.0.40.0030.04320.24
7.0.30.0470.08020.13
7.0.20.0170.05020.16
7.0.10.0030.09020.13
7.0.00.0000.06720.00
5.6.280.0030.07320.79
5.6.210.0130.07320.71
5.6.200.0130.04018.22
5.6.190.0100.04320.67
5.6.180.0300.02720.61
5.6.170.0300.08020.43
5.6.160.0070.08320.61
5.6.150.0030.07018.13
5.6.140.0100.04718.11
5.6.130.0030.06018.16
5.6.120.0100.04721.15
5.6.110.0030.04321.03
5.6.100.0100.07721.01
5.6.90.0100.07720.88
5.6.80.0130.07020.53
5.6.70.3900.04020.36
5.5.350.0230.08320.45
5.5.340.0030.04017.98
5.5.330.0030.04020.46
5.5.320.0270.06320.30
5.5.310.0370.06720.18
5.5.300.0030.07717.91
5.5.290.0130.08017.91
5.5.280.0130.04320.88
5.5.270.0070.05320.73
5.5.260.0070.06720.87
5.5.250.0070.03720.59
5.5.240.0200.05720.20
5.4.450.0830.05319.58
5.4.440.0630.06319.24
5.4.430.0670.05719.09
5.4.420.0830.05319.61
5.4.410.0700.05319.00
5.4.400.0800.05319.31
5.4.390.0530.06019.28
5.4.380.0730.05319.16
5.4.370.0730.05019.28
5.4.360.0600.06319.22
5.4.350.0730.06019.16
5.4.340.0050.03511.98
5.4.320.0020.04012.46
5.4.310.0040.04012.46
5.4.300.0050.03812.47
5.4.290.0060.03712.47
5.4.280.0030.03812.36
5.4.270.0050.03612.36
5.4.260.0060.03712.36
5.4.250.0030.04012.36
5.4.240.0040.03712.36
5.4.230.0060.03912.35
5.4.220.0100.03512.36
5.4.210.0060.03412.35
5.4.200.0040.03912.35
5.4.190.0050.03712.35
5.4.180.0090.03112.35
5.4.170.0060.03512.36
5.4.160.0080.03412.36
5.4.150.0040.03712.36
5.4.140.0070.04412.04
5.4.130.0020.04112.03
5.4.120.0060.03511.98
5.4.110.0070.03511.98
5.4.100.0060.03411.98
5.4.90.0070.03411.98
5.4.80.0040.03711.98
5.4.70.0070.03211.98
5.4.60.0070.03311.97
5.4.50.0060.03411.98
5.4.40.0040.03511.97
5.4.30.0050.03711.96
5.4.20.0060.03411.96
5.4.10.0070.03311.96
5.4.00.0060.03711.45
5.3.290.0070.04212.80
5.3.280.0070.03612.71
5.3.270.0080.03712.73
5.3.260.0040.04312.72
5.3.250.0090.03312.72
5.3.240.0050.03812.72
5.3.230.0080.03512.71
5.3.220.0070.03612.68
5.3.210.0060.03912.68
5.3.200.0050.03712.68
5.3.190.0050.03912.68
5.3.180.0050.04212.68
5.3.170.0050.03812.67
5.3.160.0090.03312.67
5.3.150.0030.03912.67
5.3.140.0030.04012.66
5.3.130.0020.04112.66
5.3.120.0050.03912.66
5.3.110.0090.04112.66
5.3.100.0040.04112.11
5.3.90.0060.03512.08
5.3.80.0060.04012.07
5.3.70.0040.04712.07
5.3.60.0050.03712.06
5.3.50.0070.03712.00
5.3.40.0060.03712.00
5.3.30.0080.03611.96
5.3.20.0070.03811.74
5.3.10.0060.03411.70
5.3.00.0040.03711.70
5.2.170.0050.0299.21
5.2.160.0050.0299.20
5.2.150.0060.0309.20
5.2.140.0070.0289.20
5.2.130.0040.0299.16
5.2.120.0050.0279.16
5.2.110.0040.0359.17
5.2.100.0050.0359.16
5.2.90.0050.0339.16
5.2.80.0030.0319.15
5.2.70.0040.0309.15
5.2.60.0070.0279.11
5.2.50.0070.0279.08
5.2.40.0040.0429.05
5.2.30.0070.0329.03
5.2.20.0030.0309.02
5.2.10.0070.0348.95
5.2.00.0070.0328.80
5.1.60.0020.0298.08
5.1.50.0050.0278.07
5.1.40.0030.0288.06
5.1.30.0070.0368.41
5.1.20.0030.0318.43
5.1.10.0040.0288.16
5.1.00.0060.0248.15
5.0.50.0040.0226.63
5.0.40.0050.0206.49
5.0.30.0020.0326.31
5.0.20.0040.0196.27
5.0.10.0040.0196.25
5.0.00.0050.0286.25
4.4.90.0050.0224.78
4.4.80.0040.0144.75
4.4.70.0020.0234.75
4.4.60.0030.0214.75
4.4.50.0020.0194.77
4.4.40.0030.0254.71
4.4.30.0030.0144.76
4.4.20.0030.0154.84
4.4.10.0060.0124.85
4.4.00.0020.0254.76
4.3.110.0030.0194.67
4.3.100.0050.0124.66
4.3.90.0030.0144.64
4.3.80.0020.0244.58
4.3.70.0030.0134.63
4.3.60.0020.0154.63
4.3.50.0030.0144.63
4.3.40.0030.0234.54
4.3.30.0030.0153.30
4.3.20.0020.0153.27
4.3.10.0000.0173.23
4.3.00.0170.0276.99

preferences:
74.85 ms | 401 KiB | 5 Q