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; } $startTimeMerge = microtime(true); $map = array_merge($classmap1, $classmap2); $endTimeMerge = microtime(true); $startTimeForeach = microtime(true); foreach ($classmap2 as $k => $v) { $classmap1[$k] = $v; } $endTimeForeach = microtime(true); function amerge(array $a, array $b) { foreach ($b as $key => $value) { $a[$key] = $value; } return $a; } $startTimeFunc = microtime(true); amerge($classmap1, $classmap2); $endTimeFunc = microtime(true); echo "Merging took " . (($endTimeMerge - $startTimeMerge)*1000) ." microseconds<br />\n"; echo "Foreach took " . (($endTimeForeach - $startTimeForeach)*1000) ." microseconds<br />\n"; echo "Func took " . (($endTimeFunc - $startTimeFunc)*1000) ." microseconds<br />\n";

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)
7.4.00.0100.01719.46
7.3.120.0070.02019.09
7.3.110.0120.01519.68
7.3.100.0100.01119.34
7.3.90.0030.01319.37
7.3.80.0100.01019.43
7.3.70.0130.00719.39
7.3.60.0030.01719.30
7.3.50.0090.01219.36
7.3.40.0030.01619.29
7.3.30.0140.00719.53
7.3.20.0160.00624.86
7.3.10.0050.01624.55
7.3.00.0060.01324.71
7.2.250.0070.02119.26
7.2.240.0100.01619.22
7.2.230.0100.01019.33
7.2.220.0000.01519.20
7.2.210.0060.01218.76
7.2.200.0090.01218.95
7.2.190.0030.02018.90
7.2.180.0060.01319.07
7.2.170.0040.01818.81
7.2.130.0090.00923.00
7.2.120.0090.01322.87
7.2.110.0070.01022.87
7.2.100.0170.00722.75
7.2.90.0160.01022.86
7.2.80.0130.00722.73
7.2.70.0130.00722.84
7.2.60.0030.01722.57
7.2.50.0030.01422.88
7.2.40.0100.01022.86
7.2.30.0110.00722.82
7.2.20.0100.01322.79
7.2.10.0070.01723.02
7.2.00.0030.01524.06
7.1.330.0090.01221.82
7.1.320.0130.00721.82
7.1.310.0100.01021.61
7.1.300.0000.01621.65
7.1.290.0120.00921.75
7.1.280.0090.01321.63
7.1.270.0030.02121.77
7.1.260.0060.01221.72
7.1.250.0100.01321.80
7.1.70.0000.01522.94
7.1.60.0100.01723.17
7.1.50.0070.02122.69
7.1.00.0000.06028.25
7.0.200.0550.01019.24
7.0.140.0030.08028.16
7.0.120.0030.08028.05
7.0.60.0100.03724.08
7.0.50.0030.04721.96
7.0.40.0030.04317.80
7.0.30.0100.03717.76
7.0.20.0100.06717.80
7.0.10.0070.04017.71
7.0.00.0130.08717.75
5.6.210.0030.10729.80
5.6.200.0070.05027.43
5.6.190.0030.06027.45
5.6.180.0070.05027.51
5.6.170.0100.04327.44
5.6.160.0070.06727.24
5.6.150.0070.06027.43
5.6.140.0130.10327.41
5.6.130.0030.10327.44
5.6.120.0070.06027.27
5.6.110.0130.09327.47
5.6.100.0100.09727.46
5.6.90.0070.11027.26
5.6.80.0130.09026.82
5.6.70.0100.09726.66
5.6.60.0270.08026.77
5.6.50.0100.09726.91
5.6.40.0100.08726.82
5.6.30.0070.05326.79
5.6.20.0100.09026.73
5.6.10.0070.05726.77
5.6.00.0130.06726.79
5.5.350.0430.08729.67
5.5.340.0130.04327.29
5.5.330.0170.03727.29
5.5.320.0030.05327.19
5.5.310.0070.05027.20
5.5.300.0070.05727.28
5.5.290.0200.08727.23
5.5.280.0030.05727.23
5.5.270.0100.08327.27
5.5.260.0300.08027.23
5.5.250.0330.08327.07
5.5.240.0170.09026.48
5.5.230.0070.09026.59
5.5.220.0100.09726.46
5.5.210.0070.09026.61
5.5.200.0170.08726.44
5.5.190.0070.09026.61
5.5.180.0200.08326.58
5.5.160.0230.06726.54
5.5.150.0130.07726.60
5.5.140.0230.07726.60
5.5.130.0130.07726.63
5.5.120.0070.09726.55
5.5.110.0170.08726.62
5.5.100.0230.08326.58
5.5.90.0170.08726.48
5.5.80.0100.09326.43
5.5.70.0100.09326.49
5.5.60.0130.09026.45
5.5.50.0130.08026.29
5.5.40.0170.08726.27
5.5.30.0130.09326.33
5.5.20.0230.08026.27
5.5.10.0070.10726.28
5.5.00.0000.07726.30
5.4.450.0100.08028.43
5.4.440.0070.10728.24
5.4.430.0200.06728.44
5.4.420.0130.09328.44
5.4.410.0170.08728.20
5.4.400.0070.08728.18
5.4.390.0170.08728.04
5.4.380.0130.07328.06
5.4.370.0100.09328.04
5.4.360.0200.09028.02
5.4.350.0070.10028.00
5.4.340.0100.09728.10
5.4.320.0030.09027.93
5.4.310.0100.09327.95
5.4.300.0100.09028.23
5.4.290.0130.10028.03
5.4.280.0170.09328.14
5.4.270.0070.06728.16
5.4.260.0070.09728.03
5.4.250.0070.10028.07
5.4.240.0300.09028.13
5.4.230.0200.08727.93
5.4.220.0030.10328.17
5.4.210.0170.09028.22
5.4.200.0030.07727.93
5.4.190.0100.09728.07
5.4.180.0130.08327.91
5.4.170.0070.06328.14
5.4.160.0200.08327.92
5.4.150.0170.09328.06
5.4.140.0100.09325.36
5.4.130.0100.09725.37
5.4.120.0100.04725.48
5.4.110.0200.08725.50
5.4.100.0100.06025.51
5.4.90.0130.08725.45
5.4.80.0200.07725.43
5.4.70.0070.06025.42
5.4.60.0070.09325.58
5.4.50.0170.09325.38
5.4.40.0170.05725.39
5.4.30.0130.07325.45
5.4.20.0070.07025.29
5.4.10.0170.08725.33
5.4.00.0100.08024.99
5.3.290.0130.08323.79
5.3.280.0100.05323.77
5.3.270.0170.07723.79
5.3.260.0070.09723.76
5.3.250.0130.09023.59
5.3.240.0100.09323.88
5.3.230.0100.09723.78
5.3.220.0170.08323.71
5.3.210.0130.09023.77
5.3.200.0270.07723.71
5.3.190.0170.08023.75
5.3.180.0170.10323.74
5.3.170.0200.07723.73
5.3.160.0130.09323.66
5.3.150.0130.08023.70
5.3.140.0070.05323.71
5.3.130.0070.06323.75
5.3.120.0030.05323.71
5.3.110.0030.08723.79
5.3.100.0130.08723.01
5.3.90.0130.07323.21
5.3.80.0200.08023.14
5.3.70.0100.09323.07
5.3.60.0070.09323.10
5.3.50.0070.09323.04
5.3.40.0030.08722.97
5.3.30.0000.06022.98
5.3.20.0030.05322.80
5.3.10.0130.05022.75
5.3.00.0070.05022.44
5.2.170.0170.07719.96
5.2.160.0100.08020.17
5.2.150.0100.09320.13
5.2.140.0030.05020.17
5.2.130.0130.04020.13
5.2.120.0170.07320.11
5.2.110.0030.05020.08
5.2.100.0030.08720.14
5.2.90.0100.07720.12
5.2.80.0000.05720.09
5.2.70.0000.07020.08
5.2.60.0100.08319.97
5.2.50.0100.06719.78
5.2.40.0100.08319.73
5.2.30.0100.08318.70
5.2.20.0030.07018.77
5.2.10.0030.04718.57
5.2.00.0100.07319.50
5.1.60.0170.07720.56
5.1.50.0100.06320.66
5.1.40.0100.08020.42
5.1.30.0170.07720.82
5.1.20.0170.07720.92
5.1.10.0070.05720.59
5.1.00.0070.06020.64
5.0.50.0070.0308.55
5.0.40.0000.0438.49
5.0.30.0030.0408.20
5.0.20.0000.0478.25
5.0.10.0000.0238.29
5.0.00.0130.0278.21
4.4.90.0000.0337.55
4.4.80.0070.0307.55
4.4.70.0000.0377.55
4.4.60.0030.0177.55
4.4.50.0000.0407.55
4.4.40.0030.0507.55
4.4.30.0000.0237.55
4.4.20.0070.0307.55
4.4.10.0030.0407.55
4.4.00.0130.0477.55
4.3.110.0030.0207.55
4.3.100.0000.0177.55
4.3.90.0000.0177.55
4.3.80.0000.0377.55
4.3.70.0000.0277.55
4.3.60.0000.0237.55
4.3.50.0000.0337.55
4.3.40.0000.0307.55
4.3.30.0030.0377.55
4.3.20.0030.0307.55
4.3.10.0000.0207.55
4.3.00.0000.0237.55

preferences:
56.69 ms | 401 KiB | 5 Q