3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); function out(&$x) { $x = 1; } out($a); $b = NULL; out($b); out($c = NULL); echo "[$a,$b,$c]";

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)
8.3.60.0120.00318.80
8.3.50.0100.00821.90
8.3.40.0110.00718.87
8.3.30.0060.00919.27
8.3.20.0070.00020.29
8.3.10.0040.00422.11
8.3.00.0000.01022.43
8.2.180.0090.01218.29
8.2.170.0030.01022.96
8.2.160.0060.00920.98
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.00726.16
8.2.120.0080.00019.36
8.2.110.0070.00322.26
8.2.100.0000.01119.89
8.2.90.0060.00319.22
8.2.80.0000.00717.97
8.2.70.0080.00017.50
8.2.60.0030.00517.80
8.2.50.0040.00418.07
8.2.40.0060.00318.22
8.2.30.0050.00317.87
8.2.20.0050.00317.57
8.2.10.0040.00417.64
8.2.00.0060.00317.74
8.1.280.0110.00425.92
8.1.270.0050.00322.20
8.1.260.0060.00326.35
8.1.250.0090.00028.09
8.1.240.0030.00623.84
8.1.230.0120.00019.11
8.1.220.0000.00717.74
8.1.210.0000.00818.77
8.1.200.0030.00617.00
8.1.190.0030.00517.41
8.1.180.0080.00018.74
8.1.170.0000.00718.51
8.1.160.0050.00321.96
8.1.150.0000.00718.48
8.1.140.0040.00417.38
8.1.130.0040.00417.89
8.1.120.0050.00317.32
8.1.110.0030.00617.39
8.1.100.0040.00417.43
8.1.90.0030.00317.29
8.1.80.0040.00417.28
8.1.70.0070.00017.37
8.1.60.0050.00517.49
8.1.50.0040.00417.42
8.1.40.0040.00417.54
8.1.30.0040.00417.64
8.1.20.0050.00317.56
8.1.10.0080.00017.46
8.1.00.0050.00317.52
8.0.300.0040.00418.77
8.0.290.0040.00417.18
8.0.280.0000.00718.38
8.0.270.0030.00317.20
8.0.260.0030.00316.69
8.0.250.0030.00316.89
8.0.240.0040.00416.87
8.0.230.0000.00716.97
8.0.220.0000.00716.89
8.0.210.0070.00016.87
8.0.200.0050.00216.84
8.0.190.0080.00016.98
8.0.180.0070.00016.75
8.0.170.0040.00416.92
8.0.160.0000.00716.95
8.0.150.0060.00316.93
8.0.140.0030.00616.75
8.0.130.0030.00313.34
8.0.120.0080.00016.89
8.0.110.0030.00516.73
8.0.100.0040.00416.91
8.0.90.0000.00716.72
8.0.80.0060.00916.87
8.0.70.0030.00416.70
8.0.60.0000.00716.87
8.0.50.0040.00416.78
8.0.30.0110.01116.86
8.0.20.0130.00617.40
8.0.10.0050.00216.86
8.0.00.0060.01016.83
7.4.330.0020.00215.00
7.4.320.0050.00216.47
7.4.300.0030.00316.63
7.4.290.0030.00316.52
7.4.280.0000.00716.50
7.4.270.0000.00716.61
7.4.260.0030.00316.58
7.4.250.0040.00416.36
7.4.240.0040.00416.51
7.4.230.0030.00316.50
7.4.220.0150.00316.42
7.4.210.0060.01016.54
7.4.200.0040.00416.48
7.4.190.0000.00716.42
7.4.160.0120.00316.47
7.4.150.0090.00917.40
7.4.140.0110.00617.86
7.4.130.0080.01016.56
7.4.120.0080.01016.60
7.4.110.0080.00816.59
7.4.100.0120.00616.48
7.4.90.0030.01616.55
7.4.80.0050.01419.39
7.4.70.0040.01216.59
7.4.60.0160.00616.41
7.4.50.0000.00916.60
7.4.40.0090.00622.77
7.4.30.0060.01016.49
7.4.00.0070.01014.99
7.3.330.0050.00313.37
7.3.320.0030.00313.31
7.3.310.0000.00716.40
7.3.300.0030.00316.39
7.3.290.0070.01316.40
7.3.280.0050.01216.44
7.3.270.0100.01017.40
7.3.260.0100.00716.35
7.3.250.0130.00616.34
7.3.240.0060.00916.39
7.3.230.0200.00316.62
7.3.210.0060.01116.43
7.3.200.0110.00519.39
7.3.190.0060.01216.37
7.3.180.0110.00416.47
7.3.170.0120.00816.46
7.3.160.0120.00416.50
7.3.120.0060.01014.68
7.2.330.0090.00916.65
7.2.320.0030.01316.35
7.2.310.0030.01316.54
7.2.300.0070.01016.42
7.2.290.0030.01316.42
7.2.60.0100.00316.92
7.2.00.0070.00719.39
7.1.200.0030.01115.84
7.1.100.0000.01118.02
7.1.70.0000.00717.01
7.1.60.0130.01319.82
7.1.50.0090.00917.04
7.1.00.0030.07322.36
7.0.200.0020.00516.72
7.0.140.0030.07322.15
7.0.60.0070.07019.91
7.0.50.0070.04017.84
7.0.40.0030.04720.02
7.0.30.0270.07320.11
7.0.20.0230.07020.24
7.0.10.0100.06720.30
7.0.00.0070.06720.25
5.6.280.0030.07020.90
5.6.210.0130.05020.70
5.6.200.0000.09318.28
5.6.190.0100.04020.50
5.6.180.3470.04020.54
5.6.170.0300.08020.61
5.6.160.0070.08320.55
5.6.150.0000.04318.25
5.6.140.0070.05018.28
5.6.130.0030.05718.23
5.6.120.0130.08021.00
5.6.110.0070.07021.02
5.6.100.0030.09020.89
5.6.90.0070.05021.11
5.6.80.0070.08020.52
5.6.70.4370.04020.48
5.5.350.0130.03320.43
5.5.340.0030.05718.02
5.5.330.0130.07320.29
5.5.320.3200.04020.38
5.5.310.0270.05320.30
5.5.300.0030.08717.99
5.5.290.0030.05018.03
5.5.280.0030.06320.96
5.5.270.0200.07020.87
5.5.260.0200.07020.88
5.5.250.0100.07320.64
5.5.240.0270.07320.16
5.4.450.0500.05319.20
5.4.440.0570.06019.70
5.4.430.0070.06019.52
5.4.420.0030.08019.39
5.4.410.0170.04719.31
5.4.400.1600.00018.55
5.4.390.1370.00018.61
5.4.380.0300.05018.70
5.4.370.1270.03718.84
5.4.360.1100.04318.80
5.4.350.1000.05318.59
5.4.340.1030.05718.72
5.4.320.0060.03812.51
5.4.310.0050.04112.50
5.4.300.0060.03612.50
5.4.290.0040.04212.50
5.4.280.0070.03512.40
5.4.270.0080.03312.40
5.4.260.0270.06319.00
5.4.250.0270.06318.90
5.4.240.0130.07018.77
5.4.230.0200.06018.98
5.4.220.0200.06018.90
5.4.210.0070.05318.75
5.4.200.0200.03718.80
5.4.190.0070.05718.83
5.4.180.0030.05718.84
5.4.170.0100.05018.99
5.4.160.0100.06718.82
5.4.150.0130.04718.78
5.4.140.0030.07016.59
5.4.130.0100.04316.38
5.4.120.0070.05016.34
5.4.110.0100.05016.38
5.4.100.0070.05016.38
5.4.90.0030.05316.65
5.4.80.0130.04316.48
5.4.70.0030.05016.34
5.4.60.0030.05016.46
5.4.50.0070.04716.54
5.4.40.0170.05316.51
5.4.30.0130.06316.53
5.4.20.0100.04716.50
5.4.10.0030.07716.62
5.4.00.0100.04715.85
5.3.290.0070.04312.80
5.3.280.0130.06314.42
5.3.270.0170.06314.51
5.3.260.0070.05314.67
5.3.250.0070.05014.78
5.3.240.0030.05314.59
5.3.230.0130.05014.60
5.3.220.0170.05714.79
5.3.210.0070.06014.74
5.3.200.0130.04314.55
5.3.190.0170.04314.55
5.3.180.0000.06014.70
5.3.170.0070.05314.72
5.3.160.0100.04314.58
5.3.150.0070.05714.64
5.3.140.0170.05714.45
5.3.130.0100.05314.61
5.3.120.0130.06314.62
5.3.110.0130.05714.38
5.3.100.0130.04714.05
5.3.90.0030.05014.04
5.3.80.0030.05314.00
5.3.70.0100.05314.23
5.3.60.0130.04714.09
5.3.50.0130.05014.03
5.3.40.0200.05314.03
5.3.30.0030.05013.90
5.3.20.0100.04313.91
5.3.10.0100.06013.73
5.3.00.0070.05013.65
5.2.170.0030.04711.13
5.2.160.0130.05011.09
5.2.150.0070.04011.22
5.2.140.0100.04311.12
5.2.130.0000.04311.19
5.2.120.0070.05711.32
5.2.110.0070.04711.32
5.2.100.0070.04011.27
5.2.90.0100.03711.17
5.2.80.0030.04311.04
5.2.70.0070.04010.92
5.2.60.0030.05011.14
5.2.50.0070.05011.03
5.2.40.0000.05711.18
5.2.30.0030.04711.04
5.2.20.0070.04711.04
5.2.10.0070.04010.84
5.2.00.0070.03710.80
5.1.60.0000.05310.04
5.1.50.0070.03710.23
5.1.40.0100.0439.93
5.1.30.0030.04310.39
5.1.20.0030.03710.51
5.1.10.0070.03710.04
5.1.00.0070.03310.03
5.0.50.0070.0338.73
5.0.40.0030.0378.50
5.0.30.0000.0438.22
5.0.20.0100.0208.02
5.0.10.0070.0278.27
5.0.00.0030.0438.10
4.4.90.0030.0207.58
4.4.80.0030.0207.58
4.4.70.0030.0237.58
4.4.60.0030.0207.58
4.4.50.0000.0237.58
4.4.40.0030.0407.58
4.4.30.0030.0207.58
4.4.20.0030.0237.58
4.4.10.0000.0307.58
4.4.00.0030.0407.58
4.3.110.0030.0207.58
4.3.100.0000.0207.58
4.3.90.0000.0277.58
4.3.80.0030.0437.58
4.3.70.0100.0237.58
4.3.60.0000.0207.58
4.3.50.0030.0307.58
4.3.40.0000.0337.58
4.3.30.0070.0177.58
4.3.20.0000.0237.58
4.3.10.0030.0207.58
4.3.00.0100.0237.80

preferences:
41.03 ms | 401 KiB | 5 Q