3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function arrayReplace($a1, $a2) { foreach($a2 as $k=>$v) { $a1[$k]=$v; } return $a1; } $a1 = array(0 => 1, 1 => "b", "b" => "carrot"); $a2 = array(1 => "c", 2 => "d", "b" => "apple"); print_r($arrayReplace($a1, $a2));

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)
7.2.60.0100.00716.56
7.2.00.0060.00619.56
7.1.200.0040.00815.59
7.1.100.0000.01217.86
7.1.70.0000.01116.73
7.1.60.0100.01319.40
7.1.50.0070.01616.86
7.1.00.0000.06322.28
7.0.200.0030.00316.82
7.0.140.0070.07022.23
7.0.70.0000.06321.71
7.0.60.0130.05321.68
7.0.50.0070.08322.04
7.0.40.0030.06020.13
7.0.30.0030.08320.04
7.0.20.0030.07719.95
7.0.10.0030.08320.16
7.0.00.0030.05020.09
5.6.280.0100.06720.86
5.6.220.0070.07020.53
5.6.210.0070.07720.57
5.6.200.0130.06321.11
5.6.190.0000.07021.06
5.6.180.0030.06721.05
5.6.170.0000.07021.08
5.6.160.0030.08021.02
5.6.150.0000.08720.96
5.6.140.0030.06321.04
5.6.130.0030.05320.95
5.6.120.0100.08721.00
5.6.110.0070.06721.04
5.6.100.0170.07321.07
5.6.90.0000.06720.93
5.6.80.0000.08320.47
5.6.70.0100.07020.34
5.6.60.0070.07020.39
5.6.50.0100.06020.47
5.6.40.0130.07320.46
5.6.30.0000.07020.38
5.6.20.0000.08320.28
5.6.10.0030.08320.46
5.6.00.0030.06720.47
5.5.360.0030.07020.29
5.5.350.0070.08320.35
5.5.340.0030.07720.91
5.5.330.0030.07720.73
5.5.320.0070.07720.79
5.5.310.0070.07020.77
5.5.300.0000.08720.88
5.5.290.0030.06720.86
5.5.280.0070.05020.64
5.5.270.0070.08020.77
5.5.260.0000.06020.91
5.5.250.0030.08020.73
5.5.240.0030.07320.30
5.5.230.0070.07720.22
5.5.220.0070.06720.11
5.5.210.0100.07020.29
5.5.200.0030.08020.22
5.5.190.0070.08020.18
5.5.180.0070.08019.99
5.5.160.0070.06320.14
5.5.150.0100.06020.11
5.5.140.0100.07320.17
5.5.130.0030.08020.12
5.5.120.0070.08020.25
5.5.110.0100.07020.17
5.5.100.0000.07720.07
5.5.90.0100.07019.95
5.5.80.0030.08020.10
5.5.70.0030.06320.14
5.5.60.0030.08320.05
5.5.50.0070.07320.10
5.5.40.0100.07020.08
5.5.30.0030.07020.11
5.5.20.0070.05720.05
5.5.10.0030.07720.05
5.5.00.0030.07019.97
5.4.450.0100.08019.45
5.4.440.0070.07319.45
5.4.430.0000.08019.18
5.4.420.0070.05319.47
5.4.410.0100.07019.24
5.4.400.0030.07319.23
5.4.390.0100.06719.14
5.4.380.0070.06319.18
5.4.370.0030.07319.20
5.4.360.0000.06719.09
5.4.350.0000.07718.87
5.4.340.0100.07018.98
5.4.320.0030.04319.18
5.4.310.0030.06319.04
5.4.300.0030.06718.88
5.4.290.0030.07718.95
5.4.280.0100.07319.13
5.4.270.0070.06019.04
5.4.260.0000.07719.20
5.4.250.0070.07019.07
5.4.240.0030.06319.17
5.4.230.0000.07718.86
5.4.220.0070.07018.89
5.4.210.0000.04319.06
5.4.200.0100.04319.20
5.4.190.0000.07718.86
5.4.180.0070.05018.92
5.4.170.0030.06318.83
5.4.160.0030.07319.01
5.4.150.0000.08318.85
5.4.140.0000.07316.40
5.4.130.0000.07316.28
5.4.120.0030.07716.25
5.4.110.0070.06316.46
5.4.100.0070.07716.44
5.4.90.0030.07716.42
5.4.80.0100.06316.47
5.4.70.0000.05316.45
5.4.60.0070.05016.38
5.4.50.0000.07716.29
5.4.40.0070.07316.29
5.4.30.0100.06316.48
5.4.20.0030.06316.36
5.4.10.0030.06716.45
5.4.00.0030.06315.73
5.3.290.0030.07714.63
5.3.280.0030.05714.56
5.3.270.0100.07014.67
5.3.260.0100.06314.69
5.3.250.0030.07014.67
5.3.240.0100.06714.59
5.3.230.0000.07014.71
5.3.220.0030.07714.57
5.3.210.0000.07314.62
5.3.200.0030.07314.68
5.3.190.0000.07714.70
5.3.180.0070.07314.62
5.3.170.0030.07714.66
5.3.160.0070.04014.56
5.3.150.0030.08014.62
5.3.140.0070.06014.58
5.3.130.0030.07014.55
5.3.120.0030.04314.53
5.3.110.0100.07714.63
5.3.100.0030.07714.15
5.3.90.0070.03013.95
5.3.80.0070.06014.15
5.3.70.0070.04714.02
5.3.60.0000.06714.00
5.3.50.0030.07313.97
5.3.40.0000.07313.94
5.3.30.0030.06313.80
5.3.20.0000.03713.73
5.3.10.0070.06013.71
5.3.00.0000.07313.75
5.2.170.0070.05711.22
5.2.160.0000.05711.14
5.2.150.0030.05711.25
5.2.140.0030.05711.10
5.2.130.0030.04711.10
5.2.120.0070.06011.22
5.2.110.0030.04711.15
5.2.100.0070.06011.10
5.2.90.0000.06711.23
5.2.80.0130.05711.18
5.2.70.0030.05311.11
5.2.60.0070.04311.11
5.2.50.0000.06011.12
5.2.40.0000.04311.10
5.2.30.0000.05011.10
5.2.20.0100.05311.10
5.2.10.0030.03011.10
5.2.00.0030.06311.10
5.1.60.0000.05311.10
5.1.50.0070.03311.10
5.1.40.0000.04311.10
5.1.30.0030.06011.10
5.1.20.0000.04011.10
5.1.10.0030.04011.10
5.1.00.0000.05311.10
5.0.50.0030.04711.10
5.0.40.0030.04311.10
5.0.30.0000.06711.10
5.0.20.0000.04011.10
5.0.10.0030.04311.10
5.0.00.0030.04011.10
4.4.90.0030.02311.10
4.4.80.0000.02711.10
4.4.70.0000.04011.10
4.4.60.0070.02711.10
4.4.50.0000.03311.10
4.4.40.0000.03711.10
4.4.30.0030.03011.10
4.4.20.0000.03311.10
4.4.10.0000.03311.10
4.4.00.0000.05311.10
4.3.110.0030.03711.10
4.3.100.0030.02011.10
4.3.90.0000.03711.10
4.3.80.0000.04711.10
4.3.70.0000.03311.10
4.3.60.0000.03711.10
4.3.50.0070.03011.10
4.3.40.0000.05311.10
4.3.30.0030.02311.10
4.3.20.0000.02011.10
4.3.10.0000.02711.10
4.3.00.0030.03011.10