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 - $startTimeMerge) ." seconds<br />\n"; echo "Foreach took " . ($endTimeMerge - $startTimeMerge) ." 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)
7.2.00.0040.01219.31
7.1.70.0000.01516.86
7.1.60.0080.00617.28
7.1.50.0110.01116.86
7.1.00.0070.07022.43
7.0.200.0070.00716.82
7.0.140.0070.07022.14
7.0.70.0000.07321.53
7.0.60.0030.06721.62
7.0.50.0000.07722.05
7.0.40.0000.08020.14
7.0.30.0070.06720.03
7.0.20.0070.08320.08
7.0.10.0100.07720.06
7.0.00.0030.08320.14
5.6.280.0000.07720.92
5.6.220.0070.05020.43
5.6.210.0100.07020.64
5.6.200.0000.09321.00
5.6.190.0100.07321.01
5.6.180.0070.07721.05
5.6.170.0170.07321.10
5.6.160.0070.06721.03
5.6.150.0070.05721.11
5.6.140.0030.07320.94
5.6.130.0000.06721.01
5.6.120.0100.07321.04
5.6.110.0070.08021.00
5.6.100.0030.08020.91
5.6.90.0070.08021.10
5.6.80.0000.06320.43
5.6.70.0030.08320.44
5.6.60.0070.08020.53
5.6.50.0030.07320.39
5.6.40.0030.08020.38
5.6.30.0030.08320.43
5.6.20.0000.08020.36
5.6.10.0030.04020.38
5.6.00.0070.07020.34
5.5.360.0100.05020.27
5.5.350.0130.07320.44
5.5.340.0030.06320.83
5.5.330.0100.06720.88
5.5.320.0030.07020.82
5.5.310.0030.05720.80
5.5.300.0000.07720.77
5.5.290.0030.07720.74
5.5.280.0030.08720.85
5.5.270.0030.08720.87
5.5.260.0030.08320.79
5.5.250.0030.07020.61
5.5.240.0070.07320.16
5.5.230.0000.07020.29
5.5.220.0030.07720.10
5.5.210.0070.07320.29
5.5.200.0000.06720.22
5.5.190.0000.06320.14
5.5.180.0070.06720.15
5.5.160.0130.06020.22
5.5.150.0030.07720.24
5.5.140.0030.08020.25
5.5.130.0070.07719.98
5.5.120.0000.08320.17
5.5.110.0030.06720.14
5.5.100.0030.07320.07
5.5.90.0100.07020.06
5.5.80.0070.07020.00
5.5.70.0030.06720.09
5.5.60.0130.06020.05
5.5.50.0000.06720.14
5.5.40.0000.08319.94
5.5.30.0070.07720.02
5.5.20.0100.07320.04
5.5.10.0070.07720.04
5.5.00.0030.08320.03
5.4.450.0000.08719.20
5.4.440.0030.08019.35
5.4.430.0000.07019.28
5.4.420.0030.05319.52
5.4.410.0070.07319.00
5.4.400.0070.07719.02
5.4.390.0000.06719.10
5.4.380.0000.07319.05
5.4.370.0030.07019.03
5.4.360.0000.07718.95
5.4.350.0070.06719.14
5.4.340.0000.07019.12
5.4.320.0170.06719.12
5.4.310.0030.07019.10
5.4.300.0030.07319.02
5.4.290.0030.07019.04
5.4.280.0070.06319.09
5.4.270.0000.07018.96
5.4.260.0000.07719.09
5.4.250.0100.06019.06
5.4.240.0030.06718.80
5.4.230.0030.07019.09
5.4.220.0100.07018.92
5.4.210.0000.06719.09
5.4.200.0070.07018.78
5.4.190.0270.05019.20
5.4.180.0030.05719.02
5.4.170.0030.07018.84
5.4.160.0030.05319.12
5.4.150.0070.07719.02
5.4.140.0070.06316.23
5.4.130.0000.07716.23
5.4.120.0000.07716.23
5.4.110.0030.05716.18
5.4.100.0030.07716.31
5.4.90.0030.06316.21
5.4.80.0030.07016.17
5.4.70.0030.07016.38
5.4.60.0030.07316.25
5.4.50.0000.05016.32
5.4.40.0000.03716.43
5.4.30.0000.03716.35
5.4.20.0000.05016.31
5.4.10.0030.07716.16
5.4.00.0000.04015.76
5.3.290.0070.07314.61
5.3.280.0100.07314.56
5.3.270.0100.06714.59
5.3.260.0070.06014.59
5.3.250.0070.07714.57
5.3.240.0030.05314.60
5.3.230.0000.08014.43
5.3.220.0130.06714.55
5.3.210.0000.07014.52
5.3.200.0070.07714.45
5.3.190.0100.06714.43
5.3.180.0100.07014.40
5.3.170.0070.07314.51
5.3.160.0030.07714.54
5.3.150.0000.05714.43
5.3.140.0000.06314.50
5.3.130.0000.08014.54
5.3.120.0030.06314.49
5.3.110.0030.07314.41
5.3.100.0000.08013.99
5.3.90.0030.06714.01
5.3.80.0100.07013.90
5.3.70.0000.05013.98
5.3.60.0000.07014.02
5.3.50.0000.04313.93
5.3.40.0000.04313.95
5.3.30.0000.07713.85
5.3.20.0000.06013.55
5.3.10.0000.07313.63
5.3.00.0000.07313.50
5.2.170.0000.04011.20
5.2.160.0030.06311.17
5.2.150.0030.03711.07
5.2.140.0000.06011.20
5.2.130.0070.05310.93
5.2.120.0070.04711.07
5.2.110.0100.04710.97
5.2.100.0000.06311.02
5.2.90.0030.06710.95
5.2.80.0000.06311.02
5.2.70.0030.05311.10
5.2.60.0000.05011.01
5.2.50.0030.05010.88
5.2.40.0070.05010.92
5.2.30.0000.06010.84
5.2.20.0000.06310.81
5.2.10.0030.05710.92
5.2.00.0030.06010.72
5.1.60.0030.05010.65
5.1.50.0000.04710.65
5.1.40.0030.04710.65
5.1.30.0070.05710.65
5.1.20.0000.06010.65
5.1.10.0030.05310.65
5.1.00.0100.04710.65
5.0.50.0030.04010.65
5.0.40.0000.04310.65
5.0.30.0000.04710.65
5.0.20.0000.03310.65
5.0.10.0030.03310.65
5.0.00.0000.05310.65
4.4.90.0000.03710.65
4.4.80.0030.02010.65
4.4.70.0000.03310.65
4.4.60.0030.03010.65
4.4.50.0030.03310.65
4.4.40.0030.04710.65
4.4.30.0000.02710.65
4.4.20.0030.03710.65
4.4.10.0030.03710.65
4.4.00.0030.05310.65
4.3.110.0070.01710.65
4.3.100.0030.01710.65
4.3.90.0000.03010.65
4.3.80.0000.03010.65
4.3.70.0030.03010.65
4.3.60.0000.03010.65
4.3.50.0000.03010.65
4.3.40.0000.05010.65
4.3.30.0000.03710.65
4.3.20.0000.03710.65
4.3.10.0000.03710.65
4.3.00.0000.03310.65

preferences:
33.44 ms | 401 KiB | 5 Q