3v4l.org

run code in 300+ PHP versions simultaneously
<?php $classmap1 = array(); for ($i=1; $i<=100; $i++) { $classmap1['a'.$i] = $i+1; } $classmap2 = array(); for ($i=1; $i<=100; $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) ." 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)
7.2.00.0040.00819.47
7.1.70.0050.00217.21
7.1.60.0070.00717.28
7.1.50.0030.01017.11
7.1.00.0000.06322.44
7.0.200.0040.00416.82
7.0.140.0030.07322.19
7.0.100.0100.04019.94
7.0.90.0070.08019.92
7.0.80.0170.06719.98
7.0.70.0130.04719.94
7.0.60.0100.07019.86
7.0.50.0100.08320.30
7.0.40.0030.08320.09
7.0.30.0070.08719.98
7.0.20.0000.08720.09
7.0.10.0070.05720.07
7.0.00.0000.05720.13
5.6.280.0070.07020.81
5.6.250.0130.05020.63
5.6.240.0130.08020.67
5.6.230.0030.08720.57
5.6.220.0030.05020.50
5.6.210.0030.07320.61
5.6.200.0070.07321.21
5.6.190.0070.08021.04
5.6.180.0070.08321.20
5.6.170.0030.05021.02
5.6.160.0100.08320.98
5.6.150.0170.05720.97
5.6.140.0030.08021.05
5.6.130.0070.08320.96
5.6.120.0030.09020.99
5.6.110.0030.08320.98
5.6.100.0030.05320.96
5.6.90.0170.07721.05
5.6.80.0130.06720.44
5.6.70.0130.06320.45
5.6.60.0130.05320.43
5.6.50.0100.03720.35
5.6.40.0030.04720.41
5.6.30.0070.03720.41
5.6.20.0030.04020.40
5.6.10.0100.05020.33
5.6.00.0070.04720.34
5.5.380.0170.07020.43
5.5.370.0170.06720.45
5.5.360.0070.08020.59
5.5.350.0070.07720.36
5.5.340.0030.08320.96
5.5.330.0130.07320.80
5.5.320.0130.07320.81
5.5.310.0030.05720.90
5.5.300.0070.05720.76
5.5.290.0100.07020.96
5.5.280.0070.08020.65
5.5.270.0100.07720.92
5.5.260.0100.07720.65
5.5.250.0030.07720.56
5.5.240.0100.07320.30
5.5.230.0170.06020.21
5.5.220.0070.06320.32
5.5.210.0030.04320.17
5.5.200.0100.05020.22
5.5.190.0070.04320.11
5.5.180.0100.04020.22
5.5.160.0030.03720.16
5.5.150.0130.04720.30
5.5.140.0070.04720.16
5.5.130.0030.07320.29
5.5.120.0070.03720.28
5.5.110.0030.04020.18
5.5.100.0030.04020.17
5.5.90.0130.02720.09
5.5.80.0100.04320.04
5.5.70.0070.03320.13
5.5.60.0070.03319.99
5.5.50.0100.03320.08
5.5.40.0100.03020.03
5.5.30.0070.04020.18
5.5.20.0070.04319.97
5.5.10.0100.03320.08
5.5.00.0070.04020.00
5.4.450.0130.07319.18
5.4.440.0030.08319.35
5.4.430.0000.05319.39
5.4.420.0070.04719.45
5.4.410.0100.08019.14
5.4.400.0100.04019.14
5.4.390.0100.06719.10
5.4.380.0070.07019.04
5.4.370.0070.03718.91
5.4.360.0070.04319.03
5.4.350.0070.03719.12
5.4.340.0100.03018.93
5.4.320.0070.06019.03
5.4.310.0070.03718.90
5.4.300.0030.04018.78
5.4.290.0000.04018.90
5.4.280.0030.04319.22
5.4.270.0000.04019.23
5.4.260.0030.04319.04
5.4.250.0000.04019.02
5.4.240.0030.03718.92
5.4.230.0030.04019.04
5.4.220.0070.03319.02
5.4.210.0100.03018.95
5.4.200.0030.03718.89
5.4.190.0030.03719.11
5.4.180.0030.03319.13
5.4.170.0070.04319.02
5.4.160.0000.04319.21
5.4.150.0000.04018.95
5.4.140.0170.06316.34
5.4.130.0130.04316.33
5.4.120.0070.07316.43
5.4.110.0170.06716.39
5.4.100.0030.04016.36
5.4.90.0100.07016.46
5.4.80.0130.03716.39
5.4.70.0030.07716.49
5.4.60.0070.07716.34
5.4.50.0100.06316.45
5.4.40.0070.07316.43
5.4.30.0000.08016.32
5.4.20.0070.07016.25
5.4.10.0000.08316.43
5.4.00.0100.07015.62
5.3.290.0030.03314.70
5.3.280.0000.04714.48
5.3.270.0030.03714.51
5.3.260.0030.03714.64
5.3.250.0000.04014.67
5.3.240.0100.07314.64
5.3.230.0100.07714.66
5.3.220.0070.07014.46
5.3.210.0100.07314.64
5.3.200.0070.07314.61
5.3.190.0100.07014.50
5.3.180.0070.07314.61
5.3.170.0100.07314.57
5.3.160.0030.06014.49
5.3.150.0100.05014.60
5.3.140.0000.07314.48
5.3.130.0070.07314.60
5.3.120.0070.05714.50
5.3.110.0070.08014.64
5.3.100.0030.07714.12
5.3.90.0100.06714.07
5.3.80.0100.07314.04
5.3.70.0100.06714.09
5.3.60.0030.04314.06
5.3.50.0200.06013.87
5.3.40.0100.07313.87
5.3.30.0100.06713.97
5.3.20.0030.04313.75
5.3.10.0100.07013.63
5.3.00.0000.04313.56
5.2.170.0030.06011.62
5.2.160.0000.06711.62
5.2.150.0070.04711.62
5.2.140.0030.06311.62
5.2.130.0000.06711.62
5.2.120.0070.05011.62
5.2.110.0000.06011.62
5.2.100.0070.05311.62
5.2.90.0030.06011.62
5.2.80.0030.06311.62
5.2.70.0000.06311.62
5.2.60.0100.05711.62
5.2.50.0070.06311.62
5.2.40.0070.02711.62
5.2.30.0130.05311.62
5.2.20.0070.05711.62
5.2.10.0100.03711.62
5.2.00.0100.05311.62
5.1.60.0000.05711.62
5.1.50.0070.05011.62
5.1.40.0070.05311.62
5.1.30.0100.05011.62
5.1.20.0070.05311.62
5.1.10.0100.04311.62
5.1.00.0070.04011.62
5.0.50.0070.04011.62
5.0.40.0070.04311.62
5.0.30.0030.05711.62
5.0.20.0030.03311.62
5.0.10.0030.02711.62
5.0.00.0030.07011.62
4.4.90.0100.03011.62
4.4.80.0030.02711.62
4.4.70.0070.03311.62
4.4.60.0030.03711.62
4.4.50.0030.03711.62
4.4.40.0000.04311.62
4.4.30.0000.04011.62
4.4.20.0030.03311.62
4.4.10.0000.04011.62
4.4.00.0000.05011.62
4.3.110.0000.03011.62
4.3.100.0030.03011.62
4.3.90.0030.02311.62
4.3.80.0030.05311.62
4.3.70.0030.03711.62
4.3.60.0030.03711.62
4.3.50.0000.03711.62
4.3.40.0030.05011.62
4.3.30.0030.03311.62
4.3.20.0030.03711.62
4.3.10.0000.03711.62
4.3.00.0030.03311.62

preferences:
35.26 ms | 401 KiB | 5 Q