3v4l.org

run code in 300+ PHP versions simultaneously
<?php function merge(array $a, array $b, $preserveNumericKeys = false) { foreach ($b as $key => $value) { if (array_key_exists($key, $a)) { if (is_int($key) && !$preserveNumericKeys) { $a[] = $value; } elseif (is_array($value) && is_array($a[$key])) { $a[$key] = static::merge($a[$key], $value, $preserveNumericKeys); } else { $a[$key] = $value; } } else { $a[$key] = $value; } } return $a; } $r = merge(array('franz', 'de leon'), array('franz', 'kafka')); var_dump($r);

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)
5.6.280.0030.07320.86
5.6.250.0100.07720.61
5.6.240.0030.08720.68
5.6.230.0100.06020.48
5.6.220.0030.06020.61
5.6.210.0000.04320.77
5.6.200.0030.06321.01
5.6.190.0100.08021.00
5.6.180.0070.04721.05
5.6.170.0130.07021.05
5.6.160.0100.04321.08
5.6.150.0070.06321.04
5.6.140.0100.04021.04
5.6.130.0030.08721.01
5.6.120.0170.07721.03
5.6.110.0030.08721.06
5.6.100.0100.08721.02
5.6.90.0170.07720.93
5.6.80.0030.09020.46
5.6.70.0030.08020.52
5.6.60.0030.08320.45
5.6.50.0030.08320.32
5.6.40.0070.07320.37
5.6.30.0130.05320.43
5.6.20.0000.08320.27
5.6.10.0100.05320.43
5.6.00.0000.08720.27
5.5.380.0070.07720.43
5.5.370.0170.06320.35
5.5.360.0070.06720.34
5.5.350.0030.04020.39
5.5.340.0030.04020.87
5.5.330.0100.07720.64
5.5.320.0070.07320.87
5.5.310.0070.04320.92
5.5.300.0000.04720.87
5.5.290.0100.07720.79
5.5.280.0070.06720.82
5.5.270.0070.07320.87
5.5.260.0030.05720.63
5.5.250.0070.08320.72
5.5.240.0070.06720.25
5.5.230.0030.05020.24
5.5.220.0100.06720.26
5.5.210.0070.06320.16
5.5.200.0130.07720.15
5.5.190.0030.06720.17
5.5.180.0130.07020.12
5.5.160.0070.08720.18
5.5.150.0070.06720.27
5.5.140.0030.08320.11
5.5.130.0130.07720.20
5.5.120.0100.08019.98
5.5.110.0100.06320.17
5.5.100.0070.07020.16
5.5.90.0070.08020.06
5.5.80.0100.05320.00
5.5.70.0130.07019.96
5.5.60.0070.07020.05
5.5.50.0130.07720.02
5.5.40.0030.07320.12
5.5.30.0200.07320.05
5.5.20.0100.05720.15
5.5.10.0030.06720.03
5.5.00.0130.04020.03
5.4.450.0130.04719.23
5.4.440.0030.08319.46
5.4.430.0070.07019.35
5.4.420.0100.03719.53
5.4.410.0100.06319.33
5.4.400.0100.08019.21
5.4.390.0030.04718.91
5.4.380.0130.04718.94
5.4.370.0070.04319.04
5.4.360.0070.06019.09
5.4.350.0100.07318.88
5.4.340.0100.05319.02
5.4.320.0070.07719.14
5.4.310.0070.08319.03
5.4.300.0070.04319.14
5.4.290.0130.06019.20
5.4.280.0100.04319.12
5.4.270.0200.06718.89
5.4.260.0100.04019.20
5.4.250.0100.07718.96
5.4.240.0100.03319.15
5.4.230.0170.04319.00
5.4.220.0070.05019.12
5.4.210.0100.06719.18
5.4.200.0100.06319.04
5.4.190.0100.07319.14
5.4.180.0070.07718.94
5.4.170.0100.05019.03
5.4.160.0230.04018.89
5.4.150.0000.05319.01
5.4.140.0130.06016.37
5.4.130.0130.07016.14
5.4.120.0000.04716.20
5.4.110.0030.07716.44
5.4.100.0030.04016.50
5.4.90.0170.06016.42
5.4.80.0100.06716.50
5.4.70.0100.07016.32
5.4.60.0030.06716.34
5.4.50.0070.04016.46
5.4.40.0100.07316.39
5.4.30.0170.06016.42
5.4.20.0170.06016.44
5.4.10.0030.07316.40
5.4.00.0100.04715.81
5.3.290.0100.04315.57
5.3.280.0000.07315.57
5.3.270.0070.07715.57
5.3.260.0070.07315.57
5.3.250.0030.04315.57
5.3.240.0070.07315.57
5.3.230.0070.08015.57
5.3.220.0070.07015.57
5.3.210.0000.08015.57
5.3.200.0100.07315.57
5.3.190.0070.05315.57
5.3.180.0070.07315.57
5.3.170.0070.06315.57
5.3.160.0100.07015.57
5.3.150.0070.06315.57
5.3.140.0100.07015.57
5.3.130.0100.04015.57
5.3.120.0130.07015.57
5.3.110.0030.05015.57
5.3.100.0070.07715.57
5.3.90.0070.07015.57
5.3.80.0100.06715.57
5.3.70.0030.08015.57
5.3.60.0070.04015.57
5.3.50.0030.07715.57
5.3.40.0070.07315.57
5.3.30.0030.07715.57
5.3.20.0070.07315.57
5.3.10.0030.04715.57
5.3.00.0130.06315.57
5.2.170.0030.06715.57
5.2.160.0130.05715.57
5.2.150.0030.06715.57
5.2.140.0000.06715.57
5.2.130.0130.05015.57
5.2.120.0100.05315.57
5.2.110.0000.06315.57
5.2.100.0100.05015.57
5.2.90.0100.06015.57
5.2.80.0100.04715.57
5.2.70.0070.04715.57
5.2.60.0000.07015.57
5.2.50.0030.05015.57
5.2.40.0030.06015.57
5.2.30.0100.05315.57
5.2.20.0030.05315.57
5.2.10.0070.03315.57
5.2.00.0030.06315.57
5.1.60.0030.03315.57
5.1.50.0070.05015.57
5.1.40.0070.04015.57
5.1.30.0030.06015.57
5.1.20.0100.05015.57
5.1.10.0030.05715.57
5.1.00.0030.05715.57
5.0.50.0030.05015.57
5.0.40.0030.04315.57
5.0.30.0030.05715.57
5.0.20.0030.04315.57
5.0.10.0030.04315.57
5.0.00.0000.04315.57
4.4.90.0030.03715.57
4.4.80.0000.04315.57
4.4.70.0000.02315.57
4.4.60.0000.03715.57
4.4.50.0030.01715.57
4.4.40.0000.04315.57
4.4.30.0030.03315.57
4.4.20.0000.04015.57
4.4.10.0070.03015.57
4.4.00.0030.04715.57
4.3.110.0130.02315.57
4.3.100.0000.03315.57
4.3.90.0000.03015.57
4.3.80.0000.05715.57
4.3.70.0030.03015.57
4.3.60.0100.02715.57
4.3.50.0000.03015.57
4.3.40.0000.02715.57
4.3.30.0000.03715.57
4.3.20.0000.03015.57
4.3.10.0030.01715.57
4.3.00.0030.01315.57

preferences:
137.06 ms | 1398 KiB | 7 Q