3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { function __construct() { $a = &$this; $a = $GLOBALS['a']; var_dump($this); } } $a = new 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)
8.3.60.0140.00718.43
8.3.50.0210.00622.05
8.3.40.0170.00318.57
8.3.30.0070.00718.88
8.3.20.0000.00820.34
8.3.10.0000.00721.89
8.3.00.0080.00022.46
8.2.180.0170.00316.63
8.2.170.0000.01522.96
8.2.160.0110.00418.71
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0060.00319.48
8.2.110.0090.00022.26
8.2.100.0060.00617.72
8.2.90.0020.00519.09
8.2.80.0000.00818.04
8.2.70.0030.00617.63
8.2.60.0100.00018.05
8.2.50.0080.00018.07
8.2.40.0040.00418.16
8.2.30.0060.00318.12
8.2.20.0070.00017.65
8.2.10.0040.00417.67
8.2.00.0000.00717.56
8.1.280.0100.01025.92
8.1.270.0080.00022.18
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00323.89
8.1.230.0070.00319.17
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0000.01017.35
8.1.190.0050.00317.53
8.1.180.0030.00518.10
8.1.170.0000.00818.43
8.1.160.0000.00821.94
8.1.150.0000.00718.59
8.1.140.0060.00317.44
8.1.130.0000.00717.74
8.1.120.0030.00317.38
8.1.110.0000.00817.37
8.1.100.0000.00717.46
8.1.90.0030.00417.48
8.1.80.0040.00417.36
8.1.70.0030.00317.39
8.1.60.0090.00017.57
8.1.50.0000.00717.39
8.1.40.0040.00417.53
8.1.30.0050.00317.57
8.1.20.0040.00417.55
8.1.10.0020.00517.52
8.1.00.0040.00417.46
8.0.300.0050.00318.77
8.0.290.0040.00317.18
8.0.280.0000.00718.53
8.0.270.0050.00317.17
8.0.260.0000.00616.92
8.0.250.0000.00717.04
8.0.240.0070.00016.92
8.0.230.0000.00717.04
8.0.220.0030.00316.84
8.0.210.0000.00816.95
8.0.200.0030.00317.03
8.0.190.0030.00316.88
8.0.180.0030.00316.87
8.0.170.0040.00416.98
8.0.160.0070.00016.82
8.0.150.0040.00416.94
8.0.140.0030.00316.82
8.0.130.0030.00313.37
8.0.120.0000.00816.95
8.0.110.0040.00416.96
8.0.100.0050.00317.07
8.0.90.0000.00816.91
8.0.80.0180.00416.92
8.0.70.0070.00016.98
8.0.60.0000.00817.00
8.0.50.0040.00416.92
8.0.30.0090.01017.16
8.0.20.0110.00617.40
8.0.10.0030.00517.14
8.0.00.0140.00916.61
7.4.330.0020.00215.08
7.4.320.0030.00316.61
7.4.300.0000.00616.49
7.4.290.0040.00416.61
7.4.280.0030.00316.63
7.4.270.0030.00516.59
7.4.260.0030.00316.55
7.4.250.0050.00216.44
7.4.240.0030.00416.48
7.4.230.0000.00716.68
7.4.220.0090.00916.70
7.4.210.0070.00716.60
7.4.200.0030.00316.68
7.4.190.0000.00716.46
7.4.160.0090.00616.57
7.4.150.0100.00717.40
7.4.140.0100.00917.86
7.4.130.0100.00816.63
7.4.120.0030.01316.61
7.4.110.0080.01516.73
7.4.100.0120.01516.39
7.4.90.0110.00616.62
7.4.80.0070.01019.39
7.4.70.0140.00316.36
7.4.60.0030.01316.57
7.4.50.0000.00416.52
7.4.40.0060.00922.77
7.4.30.0060.00916.71
7.4.00.0040.01114.84
7.3.330.0000.00613.36
7.3.320.0000.00513.32
7.3.310.0030.00316.43
7.3.300.0030.00316.41
7.3.290.0160.00316.44
7.3.280.0080.00816.35
7.3.270.0120.00617.40
7.3.260.0200.00416.59
7.3.250.0070.01116.58
7.3.240.0110.00616.49
7.3.230.0100.01016.39
7.3.210.0070.01016.50
7.3.200.0100.00719.39
7.3.190.0140.00316.64
7.3.180.0060.00916.42
7.3.170.0130.00316.37
7.3.160.0130.00616.50
7.3.120.0110.00314.84
7.2.330.0120.00616.75
7.2.320.0070.01416.62
7.2.310.0110.00516.26
7.2.300.0060.01216.57
7.2.290.0130.01016.36
7.2.80.0070.00716.55
7.2.60.0120.00416.49
7.2.00.0100.00319.01
7.1.200.0090.00615.73
7.1.100.0070.00417.98
7.1.70.0020.00517.15
7.1.60.0110.01519.82
7.1.50.0100.01417.05
7.1.00.0030.07722.46
7.0.200.0080.00416.70
7.0.140.0030.06722.21
7.0.60.0130.06719.95
7.0.50.0070.03717.94
7.0.40.0030.05020.21
7.0.30.0270.08020.30
7.0.20.0070.05020.33
7.0.10.0070.09020.22
7.0.00.0130.07020.16
5.6.280.0030.07321.13
5.6.210.0170.07320.71
5.6.200.0130.07318.18
5.6.190.0030.04720.61
5.6.180.3700.04720.61
5.6.170.0230.06020.47
5.6.160.0030.06320.46
5.6.150.0100.04018.29
5.6.140.0000.04318.21
5.6.130.0100.08018.28
5.6.120.0000.04721.04
5.6.110.0070.07020.99
5.6.100.0170.06320.94
5.6.90.0170.07321.10
5.6.80.0170.07320.38
5.6.70.0400.06020.32
5.5.350.0300.04020.41
5.5.340.0030.03717.97
5.5.330.0100.07020.57
5.5.320.0270.04320.30
5.5.310.0200.05320.30
5.5.300.0070.08017.98
5.5.290.0000.05318.03
5.5.280.0030.04020.85
5.5.270.0100.04020.87
5.5.260.0170.07720.76
5.5.250.0030.04720.69
5.5.240.0400.07020.27
5.4.450.1100.04719.34
5.4.440.1030.05019.57
5.4.430.0230.05319.61
5.4.420.0300.04719.47
5.4.410.0230.06719.34
5.4.400.0070.05719.30
5.4.390.0800.05718.84
5.4.380.0230.05318.79
5.4.370.0030.04318.75
5.4.360.0000.04318.75
5.4.350.0050.04012.02
5.4.340.0080.03412.02
5.4.320.0060.03812.50
5.4.310.0040.04112.50
5.4.300.0070.04112.50
5.4.290.0090.04012.50
5.4.280.0080.04112.39
5.4.270.0030.07318.96
5.4.260.0070.05718.98
5.4.250.0030.07018.96
5.4.240.0100.05018.98
5.4.230.0070.05319.10
5.4.220.0200.07018.82
5.4.210.0000.06319.09
5.4.200.0170.05018.65
5.4.190.0000.06718.89
5.4.180.0030.08018.79
5.4.170.0070.05318.96
5.4.160.0100.05018.72
5.4.150.0130.04718.79
5.4.140.0270.04316.59
5.4.130.0030.05316.40
5.4.120.0100.06716.46
5.4.110.0030.06716.52
5.4.100.0230.05016.35
5.4.90.0230.05016.62
5.4.80.0100.05316.30
5.4.70.0030.05316.30
5.4.60.0100.05016.44
5.4.50.0070.05016.59
5.4.40.0130.04716.58
5.4.30.0130.06016.62
5.4.20.0070.05716.49
5.4.10.0070.05016.29
5.4.00.0030.07315.84
5.3.290.0080.04612.80
5.3.280.0130.04714.43
5.3.270.0030.06014.78
5.3.260.0070.05714.58
5.3.250.0070.05314.66
5.3.240.0170.06314.76
5.3.230.0070.06314.42
5.3.220.0130.05014.53
5.3.210.0200.04714.64
5.3.200.0030.06314.66
5.3.190.0130.07014.56
5.3.180.0200.04014.53
5.3.170.0170.06014.63
5.3.160.0170.04714.73
5.3.150.0030.07014.54
5.3.140.0000.08014.68
5.3.130.0100.05014.61
5.3.120.0230.04014.63
5.3.110.0100.07014.60
5.3.100.0100.06014.11
5.3.90.0070.05314.23
5.3.80.0070.05014.09
5.3.70.0030.05314.08
5.3.60.0130.06313.98
5.3.50.0070.05314.04
5.3.40.0000.06014.13
5.3.30.0000.05313.98
5.3.20.0070.04713.66
5.3.10.0100.04313.71
5.3.00.0130.06013.79
5.2.170.0230.04011.32
5.2.160.0070.04711.10
5.2.150.0030.04711.22
5.2.140.0170.04011.10
5.2.130.0100.05711.07
5.2.120.0070.05011.11
5.2.110.0030.04311.18
5.2.100.0100.03711.18
5.2.90.0070.04011.08
5.2.80.0070.04011.17
5.2.70.0030.06311.09
5.2.60.0130.04711.04
5.2.50.0130.03311.17
5.2.40.0170.03710.99
5.2.30.0100.04011.14
5.2.20.0170.03011.05
5.2.10.0070.03710.92
5.2.00.0170.03310.79
5.1.60.0100.03010.00
5.1.50.0070.0379.96
5.1.40.0130.0409.89
5.1.30.0070.05010.54
5.1.20.0030.04310.33
5.1.10.0100.03310.11
5.1.00.0000.05710.05
5.0.50.0100.0308.63
5.0.40.0070.0338.64
5.0.30.0030.0438.18
5.0.20.0130.0308.18
5.0.10.0030.0338.12
5.0.00.0070.0538.35
4.4.90.0030.0306.81
4.4.80.0100.0136.81
4.4.70.0000.0236.81
4.4.60.0070.0206.81
4.4.50.0030.0206.81
4.4.40.0030.0336.81
4.4.30.0000.0276.81
4.4.20.0000.0236.81
4.4.10.0100.0176.81
4.4.00.0070.0306.81
4.3.110.0030.0206.81
4.3.100.0000.0236.81
4.3.90.0070.0136.81
4.3.80.0000.0336.81
4.3.70.0030.0206.81
4.3.60.0000.0336.81
4.3.50.0070.0276.81
4.3.40.0030.0336.81
4.3.30.0030.0236.81
4.3.20.0030.0206.81
4.3.10.0000.0236.81
4.3.00.0170.0206.98

preferences:
43.29 ms | 401 KiB | 5 Q