3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array ('backtrace', 'print'); array_walk($array, 'walk_callback', str_repeat("\0",4096)); function walk_callback($value, $key, $userdata) { if ($value == 'print') { print($userdata); exit("\n\n"); } elseif ($value == 'backtrace') { debug_backtrace(); if ($userdata !== str_repeat("\0",4096)) { die("won't get here, \$userdata is still clean until we return"); } } }

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).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)
7.2.60.0060.00616.70
7.2.50.0230.00316.96
7.1.200.0030.01015.86
7.1.70.0080.00416.88
7.1.60.0030.00717.27
7.1.50.0040.01816.64
7.1.00.0070.07322.32
7.0.200.0040.00416.82
7.0.140.0100.06721.96
7.0.80.0430.08020.14
7.0.70.0630.07019.95
7.0.60.0600.07319.97
7.0.50.0570.05320.33
7.0.40.0070.07719.96
7.0.30.0070.09020.04
7.0.20.0070.09020.08
7.0.10.0100.08320.12
7.0.00.0100.07720.14
5.6.230.0100.08020.59
5.6.220.0130.07720.62
5.6.210.0100.08320.62
5.6.200.0070.08021.09
5.6.190.0100.08021.04
5.6.180.0070.08321.06
5.6.170.0030.08721.06
5.6.160.0130.08320.96
5.6.150.0130.04021.01
5.6.140.0070.07321.10
5.6.130.0130.08321.08
5.6.120.0070.07020.99
5.6.110.0070.08321.07
5.6.100.0100.06721.16
5.6.90.0170.07720.93
5.6.80.0070.05720.41
5.6.70.0000.08020.44
5.6.60.0100.05020.38
5.6.50.0100.07320.47
5.6.40.0070.08020.45
5.6.30.0070.07020.46
5.6.20.0000.06320.37
5.6.10.0130.07020.35
5.6.00.0170.07020.39
5.5.370.0070.05720.52
5.5.360.0130.07320.35
5.5.350.0100.07320.40
5.5.340.0070.08020.88
5.5.330.0030.09020.78
5.5.320.0070.08320.76
5.5.310.0070.08720.75
5.5.300.0000.08020.88
5.5.290.0200.07320.88
5.5.280.0030.08320.89
5.5.270.0030.09320.82
5.5.260.0170.06320.74
5.5.250.0070.07720.64
5.5.240.0100.08020.31
5.5.230.0070.07720.25
5.5.220.0170.07320.29
5.5.210.0130.07020.16
5.5.200.0000.08020.12
5.5.190.0130.06320.27
5.5.180.0130.07720.09
5.5.160.0070.08020.27
5.5.150.0200.07320.10
5.5.140.0100.07320.23
5.5.130.0070.07720.13
5.5.120.0170.07320.27
5.5.110.0130.07320.11
5.5.100.0130.07020.17
5.5.90.0070.08020.17
5.5.80.0100.07020.07
5.5.70.0170.07320.14
5.5.60.0070.08020.06
5.5.50.0000.08020.12
5.5.40.0070.08020.05
5.5.30.0170.07320.00
5.5.20.0070.08320.05
5.5.10.0270.06320.04
5.5.00.0000.09020.10
5.4.450.0070.08319.52
5.4.440.0070.07019.45
5.4.430.0000.08719.36
5.4.420.0030.08319.21
5.4.410.0070.07719.07
5.4.400.0070.07319.05
5.4.390.0070.06318.88
5.4.380.0000.08319.13
5.4.370.0170.07019.14
5.4.360.0070.08018.90
5.4.350.0200.07018.85
5.4.340.0070.06319.21
5.4.320.0070.08319.04
5.4.310.0030.07719.16
5.4.300.0070.07719.13
5.4.290.0070.07319.05
5.4.280.0070.08319.03
5.4.270.0070.07719.09
5.4.260.0200.06719.23
5.4.250.0100.07019.22
5.4.240.0030.05719.22
5.4.230.0070.07719.02
5.4.220.0100.07018.87
5.4.210.0100.07719.11
5.4.200.0100.05718.87
5.4.190.0030.08019.03
5.4.180.0100.06319.22
5.4.170.0130.05318.89
5.4.160.0100.07319.01
5.4.150.0100.07319.18
5.4.140.0100.07316.42
5.4.130.0070.06716.43
5.4.120.0070.04016.25
5.4.110.0170.06316.39
5.4.100.0070.08016.28
5.4.90.0070.07716.50
5.4.80.0100.06716.47
5.4.70.0070.07716.50
5.4.60.0170.06316.43
5.4.50.0100.06316.39
5.4.40.0130.05316.53
5.4.30.0170.06716.44
5.4.20.0070.07316.46
5.4.10.0170.06716.36
5.4.00.0170.05315.81
5.3.290.0100.07014.79
5.3.280.0100.07014.71
5.3.270.0070.07314.73
5.3.260.0030.08714.54
5.3.250.0070.07014.68
5.3.240.0130.07014.72
5.3.230.0100.07314.58
5.3.220.0130.07014.57
5.3.210.0000.08314.54
5.3.200.0070.07014.71
5.3.190.0100.06014.55
5.3.180.0070.05714.55
5.3.170.0070.04014.67
5.3.160.0000.08314.59
5.3.150.0130.07014.67
5.3.140.0000.04714.50
5.3.130.0170.07014.57
5.3.120.0130.07314.62
5.3.110.0100.05314.65
5.3.100.0030.06714.06
5.3.90.0130.06714.04
5.3.80.0070.06313.96
5.3.70.0070.06714.01
5.3.60.0000.07713.93
5.3.50.0000.08014.06
5.3.40.0000.06013.89
5.3.30.0000.06713.85
5.3.20.0170.06713.68
5.3.10.0100.06713.72
5.3.00.0270.06713.76
5.2.170.0030.06011.97
5.2.160.0000.06711.97
5.2.150.0030.06311.97
5.2.140.0030.06311.97
5.2.130.0030.07011.97
5.2.120.0000.06011.97
5.2.110.0070.06011.97
5.2.100.0130.05311.97
5.2.90.0030.06711.97
5.2.80.0070.06311.97
5.2.70.0070.06311.97
5.2.60.0070.05711.97
5.2.50.0030.06011.97
5.2.40.0100.05011.97
5.2.30.0100.05711.97
5.2.20.0100.05311.97
5.2.10.0070.05711.97
5.2.00.0100.05311.97
5.1.60.0000.02711.97
5.1.50.0000.02711.97
5.1.40.0000.03311.97
5.1.30.0000.03011.97
5.1.20.0030.02711.97
5.1.10.0030.02711.97
5.1.00.0000.03311.97
5.0.50.0030.02011.97
5.0.40.0000.02311.97
5.0.30.0070.02711.97
5.0.20.0000.03311.97
5.0.10.0030.02011.97
5.0.00.0100.05711.97
4.4.90.0100.03011.97
4.4.80.0100.03311.97
4.4.70.0030.03311.97
4.4.60.0030.02711.97
4.4.50.0000.04011.97
4.4.40.0070.05011.97
4.4.30.0030.01311.97
4.4.20.0030.02311.97
4.4.10.0030.02011.97
4.4.00.0030.03311.97
4.3.110.0000.01711.97
4.3.100.0030.03011.97
4.3.90.0030.03311.97
4.3.80.0100.01711.97
4.3.70.0000.02711.97
4.3.60.0070.02011.97
4.3.50.0000.02711.97
4.3.40.0030.05011.97
4.3.30.0000.01711.97
4.3.20.0000.02711.97
4.3.10.0070.01311.97
4.3.00.0000.01711.97