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; } $startTimeFunc = microtime(true); call_user_func_array('amerge', array($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)
7.3.10.0130.02024.43
7.3.00.0240.01424.52
7.2.130.0200.00722.71
7.2.120.0070.01422.88
7.2.110.0180.00922.81
7.2.100.0160.01922.65
7.2.90.0120.00922.62
7.2.80.0150.01522.95
7.2.70.0160.01322.82
7.2.60.0270.01023.00
7.2.50.0280.01222.93
7.2.40.0210.02022.69
7.2.30.0320.01522.83
7.2.20.0200.02022.56
7.2.10.0270.01522.64
7.2.00.0120.01823.97
7.1.250.0200.01321.64
7.1.70.0000.01622.66
7.1.60.0030.01023.18
7.1.50.0030.02322.86
7.1.00.0100.07728.15
7.0.200.0030.01322.91
7.0.140.0030.08028.03
7.0.100.0200.04324.30
7.0.90.0170.08024.20
7.0.80.0130.08324.17
7.0.70.0200.08724.14
7.0.60.0230.08324.23
7.0.50.0030.07724.55
7.0.40.0030.09720.05
7.0.30.0030.04320.12
7.0.20.0100.05020.09
7.0.10.0170.08020.13
7.0.00.0000.05020.10
5.6.280.0130.08730.21
5.6.250.0070.09330.04
5.6.240.0130.08329.93
5.6.230.0200.09029.94
5.6.220.0130.08329.80
5.6.210.0130.08329.91
5.6.200.0130.06730.32
5.6.190.0100.09030.33
5.6.180.0200.08030.31
5.6.170.0070.09330.41
5.6.160.0070.08330.39
5.6.150.0200.09330.38
5.6.140.0170.08330.34
5.6.130.0030.10330.33
5.6.120.0200.09730.25
5.6.110.0170.05730.45
5.6.100.0130.09730.31
5.6.90.0070.05330.44
5.6.80.0070.07029.74
5.6.70.0070.10329.72
5.6.60.0100.05729.65
5.6.50.0070.07329.75
5.6.40.0170.09329.65
5.6.30.0030.06329.66
5.6.20.0070.09729.61
5.6.10.0130.05029.57
5.6.00.0170.08329.56
5.5.380.0130.06029.86
5.5.370.0100.09329.61
5.5.360.0100.05329.64
5.5.350.0230.07029.66
5.5.340.0070.10330.22
5.5.330.0070.06330.15
5.5.320.0070.10730.15
5.5.310.0100.08730.02
5.5.300.0070.06330.18
5.5.290.0270.04730.16
5.5.280.0130.10030.12
5.5.270.0170.08730.20
5.5.260.0130.07030.17
5.5.250.0030.05729.88
5.5.240.0170.06329.53
5.5.230.0100.08729.54
5.5.220.0130.09029.39
5.5.210.0030.06729.59
5.5.200.0270.04329.42
5.5.190.0170.09029.46
5.5.180.0100.08029.38
5.5.160.0130.09029.51
5.5.150.0200.08729.53
5.5.140.0170.09029.54
5.5.130.0100.05029.43
5.5.120.0100.05729.47
5.5.110.0100.06729.43
5.5.100.0030.05329.46
5.5.90.0100.04729.36
5.5.80.0070.05029.44
5.5.70.0030.05329.36
5.5.60.0100.04729.35
5.5.50.0000.05729.06
5.5.40.0100.10729.16
5.5.30.0030.06029.14
5.5.20.0270.08029.25
5.5.10.0030.05329.08
5.5.00.0100.04729.15
5.4.450.0070.06328.21
5.4.440.0130.09328.46
5.4.430.0170.06728.54
5.4.420.0070.10728.24
5.4.410.0130.10028.09
5.4.400.0070.06728.04
5.4.390.0030.09328.07
5.4.380.0130.05327.94
5.4.370.0230.08028.21
5.4.360.0200.07727.94
5.4.350.0200.08028.25
5.4.340.0100.09327.93
5.4.320.0100.10328.10
5.4.310.0170.08028.10
5.4.300.0130.07028.07
5.4.290.0200.07328.07
5.4.280.0030.06027.89
5.4.270.0070.06027.92
5.4.260.0030.05328.14
5.4.250.0100.04728.14
5.4.240.0000.06028.14
5.4.230.0030.05328.14
5.4.220.0270.06728.14
5.4.210.0130.08728.21
5.4.200.0200.07028.30
5.4.190.0030.05028.09
5.4.180.0030.06328.24
5.4.170.0100.05028.05
5.4.160.0170.04728.01
5.4.150.0130.04328.13
5.4.140.0030.05325.43
5.4.130.0100.04725.57
5.4.120.0100.04725.78
5.4.110.0100.04725.44
5.4.100.0070.04725.39
5.4.90.0030.05025.39
5.4.80.0100.04725.34
5.4.70.0030.04325.47
5.4.60.0070.04725.39
5.4.50.0030.04325.53
5.4.40.0100.04325.36
5.4.30.0030.05025.50
5.4.20.0030.04325.48
5.4.10.0030.05025.39
5.4.00.0030.05724.98
5.3.290.0200.06723.72
5.3.280.0000.05323.64
5.3.270.0100.04723.80
5.3.260.0070.05023.70
5.3.250.0100.04323.69
5.3.240.0170.04723.67
5.3.230.0070.04723.86
5.3.220.0130.04723.78
5.3.210.0100.04723.77
5.3.200.0130.05723.77
5.3.190.0070.05323.62
5.3.180.0170.03723.72
5.3.170.0100.04323.78
5.3.160.0030.05023.61
5.3.150.0030.05323.65
5.3.140.0000.05723.82
5.3.130.0070.05023.63
5.3.120.0100.05023.65
5.3.110.0100.05723.78
5.3.100.0030.04323.23
5.3.90.0030.05023.23
5.3.80.0000.06023.07
5.3.70.0100.09723.08
5.3.60.0130.08023.10
5.3.50.0100.08723.03
5.3.40.0100.08323.10
5.3.30.0230.08022.99
5.3.20.0170.07322.77
5.3.10.0100.09322.79
5.3.00.0070.08022.43
5.2.170.0070.09019.98
5.2.160.0030.08720.08
5.2.150.0070.09020.12
5.2.140.0070.06020.12
5.2.130.0170.08020.05
5.2.120.0130.07020.01
5.2.110.0170.08020.08
5.2.100.0100.06020.12
5.2.90.0070.08320.13
5.2.80.0130.08319.97
5.2.70.0130.06720.07
5.2.60.0070.08319.88
5.2.50.0100.08719.64
5.2.40.0100.08719.64
5.2.30.0200.06318.68
5.2.20.0100.06018.77
5.2.10.0100.07018.53
5.2.00.0070.07719.40
5.1.60.0100.06720.58
5.1.50.0130.07320.52
5.1.40.0170.05320.40
5.1.30.0100.08720.77
5.1.20.0170.08020.92
5.1.10.0070.04320.45
5.1.00.0130.08320.66
5.0.50.0000.0438.40
5.0.40.0070.0308.48
5.0.30.0030.0638.33
5.0.20.0030.0178.33
5.0.10.0070.0408.33
5.0.00.0030.0638.33
4.4.90.0000.0278.33
4.4.80.0000.0378.33
4.4.70.0000.0378.33
4.4.60.0000.0308.33
4.4.50.0030.0408.33
4.4.40.0000.0338.33
4.4.30.0000.0338.33
4.4.20.0030.0278.33
4.4.10.0000.0308.33
4.4.00.0000.0308.33
4.3.110.0000.0278.33
4.3.100.0000.0178.33
4.3.90.0000.0378.33
4.3.80.0000.0308.33
4.3.70.0000.0338.33
4.3.60.0000.0238.33
4.3.50.0030.0208.33
4.3.40.0030.0438.33
4.3.30.0000.0338.33
4.3.20.0030.0238.33
4.3.10.0070.0138.33
4.3.00.0000.0278.33

preferences:
38.02 ms | 401 KiB | 5 Q