3v4l.org

run code in 300+ PHP versions simultaneously
<?php $classmap1 = array(); for ($i=1; $i<=10; $i++) { $classmap1['a'.$i] = $i+1; } $classmap2 = array(); for ($i=1; $i<=10; $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; } $endTimeForeach = microtime(true); echo "Merging took " . (($endTimeMerge - $startTimeMerge)*1000) ." microseconds<br />\n"; echo "Foreach took " . (($endTimeForeach - $startTimeForeach)*1000) ." seconds<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)
7.2.00.0100.00719.26
7.1.70.0000.00817.34
7.1.60.0140.01019.46
7.1.50.0240.01034.79
7.1.00.0000.07722.34
7.0.200.0040.00416.46
7.0.140.0000.07722.15
7.0.70.0030.08321.71
7.0.60.0100.07321.77
7.0.50.0070.08022.16
7.0.40.0070.08720.13
7.0.30.0070.06320.03
7.0.20.0030.08020.13
7.0.10.0030.06320.12
7.0.00.0030.09020.07
5.6.280.0030.07320.99
5.6.220.0000.06320.62
5.6.210.0070.07720.75
5.6.200.0000.04721.04
5.6.190.0030.08720.96
5.6.180.0030.08721.17
5.6.170.0070.08021.18
5.6.160.0070.08021.10
5.6.150.0030.08321.04
5.6.140.0000.04321.07
5.6.130.0000.09021.13
5.6.120.0000.09320.95
5.6.110.0000.09021.08
5.6.100.0030.08021.02
5.6.90.0070.08321.05
5.6.80.0070.06320.46
5.6.70.0100.05020.30
5.6.60.0070.07720.44
5.6.50.0030.07720.41
5.6.40.0030.08020.44
5.6.30.0070.08320.46
5.6.20.0030.08020.38
5.6.10.0000.08020.29
5.6.00.0030.08320.46
5.5.360.0030.07020.55
5.5.350.0100.04320.39
5.5.340.0100.03720.76
5.5.330.0100.07720.93
5.5.320.0100.08720.64
5.5.310.0030.07720.93
5.5.300.0070.08320.91
5.5.290.0070.07720.77
5.5.280.0130.08020.79
5.5.270.0130.07320.87
5.5.260.0030.05320.91
5.5.250.0130.07320.57
5.5.240.0030.08020.31
5.5.230.0170.07020.30
5.5.220.0070.06720.21
5.5.210.0100.07720.30
5.5.200.0070.07720.13
5.5.190.0100.08020.22
5.5.180.0100.07720.20
5.5.160.0070.05320.18
5.5.150.0000.05020.20
5.5.140.0000.08720.14
5.5.130.0000.08020.27
5.5.120.0070.07320.07
5.5.110.0130.08319.98
5.5.100.0130.08720.16
5.5.90.0070.08019.93
5.5.80.0030.08019.95
5.5.70.0070.07319.93
5.5.60.0030.04020.15
5.5.50.0000.04020.09
5.5.40.0000.04019.99
5.5.30.0000.05320.12
5.5.20.0000.04020.06
5.5.10.0000.04720.07
5.5.00.0000.04019.95
5.4.450.0070.07719.39
5.4.440.0000.06719.55
5.4.430.0100.07319.11
5.4.420.0070.05319.36
5.4.410.0100.07318.98
5.4.400.0070.06719.14
5.4.390.0000.06318.90
5.4.380.0000.08018.96
5.4.370.0130.07319.14
5.4.360.0100.04719.12
5.4.350.0070.07319.03
5.4.340.0000.07018.96
5.4.320.0130.07019.14
5.4.310.0070.06719.14
5.4.300.0030.07318.94
5.4.290.0000.08319.14
5.4.280.0000.07019.12
5.4.270.0100.07319.04
5.4.260.0070.07319.04
5.4.250.0030.08018.94
5.4.240.0000.04718.80
5.4.230.0000.05018.75
5.4.220.0000.04319.09
5.4.210.0100.03019.08
5.4.200.0070.03319.14
5.4.190.0000.07319.11
5.4.180.0000.04019.10
5.4.170.0030.03719.07
5.4.160.0000.07018.88
5.4.150.0030.05719.08
5.4.140.0000.03716.29
5.4.130.0030.04016.36
5.4.120.0070.06716.28
5.4.110.0030.07716.32
5.4.100.0030.06316.33
5.4.90.0100.05016.32
5.4.80.0000.04316.40
5.4.70.0030.03316.22
5.4.60.0100.03316.18
5.4.50.0000.03716.39
5.4.40.0100.03016.34
5.4.30.0100.03016.23
5.4.20.0000.03716.18
5.4.10.0000.03716.20
5.4.00.0000.04315.58
5.3.290.0070.06014.66
5.3.280.0030.03714.61
5.3.270.0000.05014.44
5.3.260.0000.04014.56
5.3.250.0030.03714.57
5.3.240.0070.04314.46
5.3.230.0000.04014.46
5.3.220.0000.05314.54
5.3.210.0070.03714.54
5.3.200.0030.03714.54
5.3.190.0030.07714.43
5.3.180.0070.05714.55
5.3.170.0000.04714.39
5.3.160.0000.04714.56
5.3.150.0000.03714.56
5.3.140.0030.04714.54
5.3.130.0030.04314.52
5.3.120.0070.03014.41
5.3.110.0000.05014.50
5.3.100.0000.03713.86
5.3.90.0070.03013.98
5.3.80.0030.03313.97
5.3.70.0000.03713.96
5.3.60.0030.03313.99
5.3.50.0000.03713.89
5.3.40.0000.04713.86
5.3.30.0030.06013.77
5.3.20.0000.05313.45
5.3.10.0100.02713.57
5.3.00.0000.03713.64
5.2.170.0000.03012.20
5.2.160.0030.02712.20
5.2.150.0000.03012.20
5.2.140.0000.03012.20
5.2.130.0070.03012.20
5.2.120.0000.05712.20
5.2.110.0030.04312.20
5.2.100.0070.04312.20
5.2.90.0030.03012.20
5.2.80.0000.03012.20
5.2.70.0000.04312.20
5.2.60.0000.03012.20
5.2.50.0030.02712.20
5.2.40.0000.03012.20
5.2.30.0070.02312.20
5.2.20.0070.04312.20
5.2.10.0070.03012.20
5.2.00.0030.02712.20
5.1.60.0000.03012.20
5.1.50.0030.02312.20
5.1.40.0030.02712.20
5.1.30.0000.02712.20
5.1.20.0000.06012.20
5.1.10.0000.06012.20
5.1.00.0030.04012.20
5.0.50.0030.04312.20
5.0.40.0000.04012.20
5.0.30.0070.06012.20
5.0.20.0000.04712.20
5.0.10.0030.04312.20
5.0.00.0000.06012.20
4.4.90.0000.01712.20
4.4.80.0030.02312.20
4.4.70.0000.01712.20
4.4.60.0000.01712.20
4.4.50.0000.01712.20
4.4.40.0000.02312.20
4.4.30.0030.01312.20
4.4.20.0000.03312.20
4.4.10.0000.04012.20
4.4.00.0030.05012.20
4.3.110.0070.03012.20
4.3.100.0030.03312.20
4.3.90.0000.03712.20
4.3.80.0030.04012.20
4.3.70.0000.03012.20
4.3.60.0000.03712.20
4.3.50.0000.03712.20
4.3.40.0000.05312.20
4.3.30.0030.03312.20
4.3.20.0000.03312.20
4.3.10.0000.02312.20
4.3.00.0000.02312.20

preferences:
35.93 ms | 401 KiB | 5 Q