3v4l.org

run code in 300+ PHP versions simultaneously
<?php $classmap1 = array(); for ($i=1; $i<=10000; $i++) { $classmap1['a'.$i] = $i+1; } $classmap2 = array(); for ($i=1; $i<=10000; $i++) { $classmap2['b'.$i] = $i+1; } abstract class merging { public static function merge(array &$a, array &$b) { return array_merge($a, $b); } } $startTimeFunc = microtime(true); merging::merge($classmap1, $classmap2); $endTimeFunc = microtime(true); echo "Func took " . (($endTimeFunc - $startTimeFunc)*1000) ." microseconds<br />\n"; //var_dump($am);

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)
7.3.10.0150.01520.12
7.3.00.0230.00220.39
7.2.130.0120.01518.63
7.2.120.0210.00018.51
7.2.110.0110.01018.48
7.2.100.0090.01518.82
7.2.90.0160.00318.43
7.2.80.0070.01618.62
7.2.70.0150.01218.49
7.2.60.0060.01418.75
7.2.50.0100.01018.82
7.2.40.0090.01218.50
7.2.30.0000.01618.83
7.2.20.0030.01418.56
7.2.10.0070.01418.51
7.2.00.0080.01020.26
7.1.250.0220.00719.62
7.1.70.0000.01220.94
7.1.60.0000.03121.31
7.1.50.0260.01638.64
7.1.00.0030.04026.36
7.0.200.0080.00320.53
7.0.140.0070.07326.15
7.0.100.0430.05322.92
7.0.90.0300.07722.80
7.0.80.0330.03722.82
7.0.70.0270.07322.79
7.0.60.0100.08722.87
7.0.50.0070.07723.26
7.0.40.0230.07320.13
7.0.30.0200.07720.10
7.0.20.0130.05320.06
7.0.10.0100.08720.18
7.0.00.0130.08320.09
5.6.280.0100.08328.03
5.6.250.0230.08027.94
5.6.240.0070.06327.91
5.6.230.0070.09027.72
5.6.220.0130.05327.83
5.6.210.0070.09727.84
5.6.200.0030.08328.38
5.6.190.0030.08328.16
5.6.180.0270.08028.31
5.6.170.0070.09028.35
5.6.160.0030.06728.27
5.6.150.0170.08328.22
5.6.140.0200.09028.25
5.6.130.0130.09728.17
5.6.120.0070.09028.24
5.6.110.0130.08028.22
5.6.100.0070.10328.34
5.6.90.0100.09028.33
5.6.80.0170.05727.63
5.6.70.0100.09327.56
5.6.60.0200.08027.65
5.6.50.0170.08027.70
5.6.40.0270.07727.60
5.6.30.0070.09327.63
5.6.20.0100.04727.68
5.6.10.0030.05027.61
5.6.00.0100.04327.58
5.5.380.0100.10327.61
5.5.370.0100.08727.64
5.5.360.0070.06727.63
5.5.350.0070.05727.65
5.5.340.0130.09028.02
5.5.330.0070.09728.11
5.5.320.0070.05327.95
5.5.310.0100.08728.10
5.5.300.0100.09328.02
5.5.290.0170.06728.08
5.5.280.0230.08027.86
5.5.270.0130.08328.06
5.5.260.0130.09328.00
5.5.250.0270.08027.92
5.5.240.0170.04727.38
5.5.230.0070.05727.54
5.5.220.0000.06727.23
5.5.210.0100.04727.47
5.5.200.0070.08327.47
5.5.190.0170.07727.38
5.5.180.0100.05727.36
5.5.160.0100.04727.34
5.5.150.0030.05027.32
5.5.140.0100.05727.45
5.5.130.0100.04327.49
5.5.120.0100.08027.37
5.5.110.0070.09327.45
5.5.100.0130.04027.32
5.5.90.0070.04327.29
5.5.80.0100.05327.36
5.5.70.0130.04027.34
5.5.60.0000.05327.25
5.5.50.0100.04327.27
5.5.40.0130.04027.30
5.5.30.0170.03727.24
5.5.20.0100.04727.32
5.5.10.0100.05027.25
5.5.00.0070.04727.17
5.4.450.0130.09026.48
5.4.440.0130.08726.53
5.4.430.0100.08726.68
5.4.420.0100.08026.36
5.4.410.0170.06726.45
5.4.400.0100.07026.05
5.4.390.0170.08026.00
5.4.380.0100.08726.19
5.4.370.0130.09026.25
5.4.360.0200.08326.12
5.4.350.0230.08026.26
5.4.340.0030.05326.16
5.4.320.0100.04326.21
5.4.310.0000.05026.18
5.4.300.0130.07026.07
5.4.290.0100.05726.05
5.4.280.0130.07726.01
5.4.270.0230.02726.04
5.4.260.0070.06326.20
5.4.250.0230.03726.24
5.4.240.0030.08026.04
5.4.230.0070.04326.14
5.4.220.0070.04326.12
5.4.210.0130.03726.23
5.4.200.0100.04326.20
5.4.190.0130.03726.35
5.4.180.0100.07026.16
5.4.170.0070.05026.34
5.4.160.0100.05326.30
5.4.150.0100.08026.15
5.4.140.0030.04323.57
5.4.130.0070.04323.57
5.4.120.0030.04723.57
5.4.110.0030.04723.50
5.4.100.0030.05323.54
5.4.90.0000.07723.70
5.4.80.0070.04023.66
5.4.70.0170.07323.46
5.4.60.0100.08323.64
5.4.50.0130.07723.54
5.4.40.0100.08323.49
5.4.30.0130.08323.48
5.4.20.0130.08023.48
5.4.10.0030.07323.48
5.4.00.0130.05022.99
5.3.290.0030.04721.39
5.3.280.0100.04321.43
5.3.270.0070.07021.44
5.3.260.0070.04721.37
5.3.250.0030.04721.36
5.3.240.0100.05321.32
5.3.230.0100.04021.48
5.3.220.0100.05321.33
5.3.210.0100.04321.33
5.3.200.0100.04021.32
5.3.190.0100.03721.33
5.3.180.0100.09021.33
5.3.170.0100.09021.38
5.3.160.0130.07721.28
5.3.150.0170.09021.43
5.3.140.0030.05021.28
5.3.130.0030.07721.27
5.3.120.0100.08321.36
5.3.110.0030.06321.40
5.3.100.0000.07720.93
5.3.90.0130.07720.71
5.3.80.0130.08320.77
5.3.70.0100.08720.77
5.3.60.0130.08720.80
5.3.50.0170.08020.95
5.3.40.0200.07720.74
5.3.30.0130.08320.61
5.3.20.0100.07320.43
5.3.10.0070.08320.49
5.3.00.0100.08720.38
5.2.170.0070.07017.87
5.2.160.0070.07717.91
5.2.150.0030.05317.77
5.2.140.0230.06317.62
5.2.130.0070.08017.87
5.2.120.0130.06717.77
5.2.110.0030.07317.73
5.2.100.0030.05717.89
5.2.90.0130.06717.84
5.2.80.0200.06317.82
5.2.70.0070.07717.70
5.2.60.0030.07717.71
5.2.50.0070.08017.76
5.2.40.0000.06317.64
5.2.30.0170.07317.73
5.2.20.0030.08317.73
5.2.10.0070.06017.58
5.2.00.0070.04317.55
5.1.60.0070.06018.23
5.1.50.0100.07018.23
5.1.40.0100.07318.09
5.1.30.0100.06318.54
5.1.20.0100.07318.48
5.1.10.0070.03318.30
5.1.00.0030.03712.25
5.0.50.0030.02312.25
5.0.40.0070.03312.25
5.0.30.0070.06012.25
5.0.20.0000.04712.25
5.0.10.0030.03012.25
5.0.00.0070.04312.25
4.4.90.0070.03312.25
4.4.80.0000.02012.25
4.4.70.0000.04012.25
4.4.60.0030.03712.25
4.4.50.0070.02312.25
4.4.40.0000.05312.25
4.4.30.0130.03012.25
4.4.20.0000.02012.25
4.4.10.0070.03312.25
4.4.00.0070.05312.25
4.3.110.0030.02712.25
4.3.100.0030.01312.25
4.3.90.0070.03012.25
4.3.80.0000.05312.25
4.3.70.0030.03312.25
4.3.60.0070.03012.25
4.3.50.0030.02012.25
4.3.40.0030.05012.25
4.3.30.0030.03312.25
4.3.20.0000.03712.25
4.3.10.0030.03312.25
4.3.00.0070.02712.25

preferences:
43.96 ms | 401 KiB | 5 Q