3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('foo' => "xyz", null => "abc"); $b = array('bar' => "baz", null => "xyz"); var_dump(array_merge($a,$b)); var_dump(merge($a,$b)); function merge(array $a, array $b) { foreach ($b as $key => $value) { if (isset($a[$key])) { if (is_int($key)) { $a[] = $value; } elseif (is_array($value) && is_array($a[$key])) { $a[$key] = static::merge($a[$key], $value); } else { $a[$key] = $value; } } else { $a[$key] = $value; } } return $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)
5.6.280.0030.07320.96
5.6.250.0030.08320.63
5.6.240.0030.04020.57
5.6.230.0100.06320.66
5.6.220.0070.08020.66
5.6.210.0100.06720.77
5.6.200.0100.05320.95
5.6.190.0130.05321.02
5.6.180.0030.04020.95
5.6.170.0100.08021.02
5.6.160.0030.08021.07
5.6.150.0030.05021.13
5.6.140.0070.08321.02
5.6.130.0200.03021.10
5.6.120.0070.08321.00
5.6.110.0070.05721.01
5.6.100.0000.07021.03
5.6.90.0000.08020.92
5.6.80.0130.03320.41
5.6.70.0030.04720.34
5.6.60.0100.03720.48
5.6.50.0030.04720.41
5.6.40.0070.08020.29
5.6.30.0130.06320.48
5.6.20.0170.07020.31
5.6.10.0030.07320.39
5.6.00.0130.07320.40
5.5.380.0070.03320.52
5.5.370.0030.04320.35
5.5.360.0100.06020.34
5.5.350.0130.06320.47
5.5.340.0070.04720.88
5.5.330.0030.04020.92
5.5.320.0100.03320.76
5.5.310.0030.09020.86
5.5.300.0000.08020.89
5.5.290.0000.07320.83
5.5.280.0170.07320.88
5.5.270.0070.05720.62
5.5.260.0100.07320.82
5.5.250.0000.08720.45
5.5.240.0030.04320.31
5.5.230.0070.06320.16
5.5.220.0070.07720.30
5.5.210.0130.08020.23
5.5.200.0100.08020.18
5.5.190.0130.07020.23
5.5.180.0030.05320.23
5.5.160.0070.05020.14
5.5.150.0070.05720.25
5.5.140.0100.06020.25
5.5.130.0070.07720.25
5.5.120.0070.07020.08
5.5.110.0070.04720.10
5.5.100.0030.07319.95
5.5.90.0170.06020.07
5.5.80.0070.07020.06
5.5.70.0070.05020.14
5.5.60.0030.04320.05
5.5.50.0100.07020.16
5.5.40.0030.06720.09
5.5.30.0100.07020.08
5.5.20.0100.05020.08
5.5.10.0070.08020.14
5.5.00.0100.07719.97
5.4.450.0100.08019.27
5.4.440.0100.08019.46
5.4.430.0170.06319.41
5.4.420.0000.04019.35
5.4.410.0070.08019.29
5.4.400.0070.07018.85
5.4.390.0000.07019.14
5.4.380.0030.07718.85
5.4.370.0100.07719.13
5.4.360.0100.08019.09
5.4.350.0070.07719.21
5.4.340.0130.06319.13
5.4.320.0170.03719.04
5.4.310.0000.04719.19
5.4.300.0070.07018.94
5.4.290.0130.06718.94
5.4.280.0030.04318.87
5.4.270.0070.08718.96
5.4.260.0170.07018.84
5.4.250.0000.05019.13
5.4.240.0070.07319.13
5.4.230.0070.07019.15
5.4.220.0000.07719.20
5.4.210.0170.06318.82
5.4.200.0100.04318.87
5.4.190.0070.07019.04
5.4.180.0070.04319.15
5.4.170.0070.04319.17
5.4.160.0100.07019.19
5.4.150.0070.04718.84
5.4.140.0070.06716.40
5.4.130.0030.07016.36
5.4.120.0030.04716.35
5.4.110.0130.06016.50
5.4.100.0100.06716.47
5.4.90.0170.05316.42
5.4.80.0030.07716.50
5.4.70.0000.07716.42
5.4.60.0100.07316.37
5.4.50.0070.07016.30
5.4.40.0030.07016.36
5.4.30.0030.06316.45
5.4.20.0030.07316.44
5.4.10.0100.05716.47
5.4.00.0000.04715.58
5.3.290.0100.06714.66
5.3.280.0170.06314.65
5.3.270.0070.06314.58
5.3.260.0100.06314.67
5.3.250.0100.07714.74
5.3.240.0070.05014.53
5.3.230.0100.06014.64
5.3.220.0030.03714.57
5.3.210.0000.05314.65
5.3.200.0030.05014.63
5.3.190.0070.07314.51
5.3.180.0130.06014.56
5.3.170.0000.05014.68
5.3.160.0070.04314.61
5.3.150.0030.03714.61
5.3.140.0070.07714.61
5.3.130.0030.07714.54
5.3.120.0030.06714.52
5.3.110.0100.04714.48
5.3.100.0070.07713.99
5.3.90.0070.04014.10
5.3.80.0170.06314.02
5.3.70.0030.07314.14
5.3.60.0030.08014.05
5.3.50.0100.06314.05
5.3.40.0030.07313.86
5.3.30.0030.07713.89
5.3.20.0030.06013.71
5.3.10.0070.07313.55
5.3.00.0070.06013.57
5.2.170.0030.06312.12
5.2.160.0000.04312.12
5.2.150.0170.05312.12
5.2.140.0030.06712.12
5.2.130.0030.03712.12
5.2.120.0000.06012.12
5.2.110.0030.05712.12
5.2.100.0100.05712.12
5.2.90.0030.03712.12
5.2.80.0070.06012.12
5.2.70.0070.03712.12
5.2.60.0030.06012.12
5.2.50.0030.04712.12
5.2.40.0030.03712.12
5.2.30.0000.06712.12
5.2.20.0000.03712.12
5.2.10.0100.03012.12
5.2.00.0170.05012.12
5.1.60.0070.04712.12
5.1.50.0030.04712.12
5.1.40.0100.04712.12
5.1.30.0070.05012.12
5.1.20.0030.04312.12
5.1.10.0030.05312.12
5.1.00.0100.03312.12
5.0.50.0030.04712.12
5.0.40.0000.02312.12
5.0.30.0030.06712.12
5.0.20.0030.02712.12
5.0.10.0030.04312.12
5.0.00.0000.04012.12
4.4.90.0000.03012.12
4.4.80.0030.01712.12
4.4.70.0030.02712.12
4.4.60.0030.03312.12
4.4.50.0030.03312.12
4.4.40.0030.04712.12
4.4.30.0070.03312.12
4.4.20.0030.03012.12
4.4.10.0000.03712.12
4.4.00.0000.04712.12
4.3.110.0070.03312.12
4.3.100.0000.03312.12
4.3.90.0000.03012.12
4.3.80.0030.05712.12
4.3.70.0070.03312.12
4.3.60.0070.02312.12
4.3.50.0030.02312.12
4.3.40.0070.04312.12
4.3.30.0000.02712.12
4.3.20.0000.03712.12
4.3.10.0000.01712.12
4.3.00.0070.02712.12

preferences:
145.6 ms | 1394 KiB | 7 Q