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

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)
7.4.00.0040.01415.09
7.3.120.0040.01514.66
7.3.110.0070.01015.10
7.3.100.0060.00914.95
7.3.90.0110.00414.83
7.3.80.0030.01214.71
7.3.70.0080.01214.93
7.3.60.0060.00915.00
7.3.50.0060.00914.86
7.3.40.0120.00314.64
7.3.30.0080.00414.93
7.3.20.0030.01416.77
7.3.10.0000.01416.73
7.3.00.0100.00616.27
7.2.250.0080.00715.07
7.2.240.0180.00315.38
7.2.230.0090.00015.27
7.2.220.0030.01214.72
7.2.210.0030.00615.11
7.2.200.0070.00415.24
7.2.190.0060.00915.21
7.2.180.0060.01015.21
7.2.170.0000.01015.16
7.2.00.0210.00419.04
7.1.330.0040.01115.93
7.1.320.0030.01015.87
7.1.310.0040.00815.91
7.1.300.0070.01015.76
7.1.290.0060.00915.96
7.1.280.0040.00815.81
7.1.270.0040.01115.83
7.1.260.0090.00915.71
7.1.70.0050.00316.95
7.1.60.0030.02019.32
7.1.50.0040.01116.95
7.1.00.0030.03322.51
7.0.200.0000.00716.63
7.0.140.0030.07322.12
7.0.90.0570.07719.89
7.0.80.0600.08019.90
7.0.70.0270.05319.95
7.0.60.0570.05319.95
7.0.50.0600.07720.33
7.0.40.0130.07720.09
7.0.30.0100.08320.11
7.0.20.0030.04720.09
7.0.10.0070.08320.16
7.0.00.0270.06720.03
5.6.280.0030.07321.14
5.6.230.0070.08020.64
5.6.220.0070.05020.65
5.6.210.0070.08320.65
5.6.200.0170.08021.12
5.6.190.0170.07721.07
5.6.180.0170.07321.08
5.6.170.0030.08320.98
5.6.160.0030.05021.11
5.6.150.0070.09021.11
5.6.140.0070.07021.02
5.6.130.0030.09721.06
5.6.120.0030.08721.15
5.6.110.0070.08721.05
5.6.100.0070.08721.11
5.6.90.0030.08321.05
5.6.80.0000.08020.45
5.6.70.0100.07320.42
5.6.60.0030.08320.41
5.6.50.0170.07020.43
5.6.40.0100.07320.33
5.6.30.0030.06020.41
5.6.20.0030.04720.43
5.6.10.0130.08020.41
5.6.00.0070.06720.34
5.5.370.0070.07720.46
5.5.360.0070.08320.47
5.5.350.0030.08720.49
5.5.340.0170.08020.92
5.5.330.0000.05320.77
5.5.320.0030.05020.90
5.5.310.0100.04320.79
5.5.300.0100.07320.89
5.5.290.0070.08020.89
5.5.280.0130.07320.87
5.5.270.0070.08320.64
5.5.260.0130.07720.81
5.5.250.0070.08320.58
5.5.240.0070.08020.15
5.5.230.0070.07020.27
5.5.220.0070.07720.27
5.5.210.0030.08320.34
5.5.200.0030.08320.22
5.5.190.0130.07020.22
5.5.180.0100.07720.19
5.5.160.0030.08320.18
5.5.150.0100.07720.28
5.5.140.0100.04720.31
5.5.130.0100.06720.15
5.5.120.0100.05020.31
5.5.110.0130.07320.27
5.5.100.0100.07720.19
5.5.90.0070.08020.18
5.5.80.0030.05720.20
5.5.70.0030.04320.16
5.5.60.0070.06020.10
5.5.50.0230.05020.17
5.5.40.0100.07320.14
5.5.30.0030.04320.08
5.5.20.0030.06320.12
5.5.10.0000.08320.07
5.5.00.0070.07020.04
5.4.450.0030.07319.56
5.4.440.0170.07319.45
5.4.430.0030.08019.17
5.4.420.0070.08019.41
5.4.410.0100.07319.10
5.4.400.0130.07319.03
5.4.390.0070.07019.05
5.4.380.0230.03318.90
5.4.370.0100.07719.09
5.4.360.0100.07318.95
5.4.350.0130.07319.18
5.4.340.0170.06718.87
5.4.320.0100.07019.04
5.4.310.0170.07019.04
5.4.300.0070.04019.24
5.4.290.0070.07719.13
5.4.280.0170.07019.23
5.4.270.0130.03719.21
5.4.260.0130.07018.94
5.4.250.0100.07319.15
5.4.240.0100.07019.12
5.4.230.0070.07719.16
5.4.220.0070.06718.84
5.4.210.0100.05719.02
5.4.200.0030.08319.02
5.4.190.0000.06318.94
5.4.180.0200.06019.03
5.4.170.0000.08718.89
5.4.160.0070.05019.16
5.4.150.0070.07019.12
5.4.140.0030.07716.51
5.4.130.0100.07016.38
5.4.120.0030.07716.46
5.4.110.0170.06316.46
5.4.100.0200.05016.39
5.4.90.0070.06016.39
5.4.80.0070.07316.43
5.4.70.0100.07316.54
5.4.60.0030.06316.37
5.4.50.0070.07316.42
5.4.40.0130.05716.52
5.4.30.0070.04716.32
5.4.20.0030.07716.46
5.4.10.0070.07316.53
5.4.00.0130.05015.75
5.3.290.0070.08014.81
5.3.280.0000.04714.66
5.3.270.0000.07314.75
5.3.260.0100.07314.61
5.3.250.0170.06714.69
5.3.240.0030.06314.79
5.3.230.0100.07014.67
5.3.220.0130.04014.57
5.3.210.0100.06714.71
5.3.200.0130.06314.74
5.3.190.0000.08314.78
5.3.180.0070.07014.73
5.3.170.0130.07314.68
5.3.160.0100.07314.78
5.3.150.0070.07014.61
5.3.140.0130.06714.70
5.3.130.0100.06014.66
5.3.120.0070.06714.69
5.3.110.0100.06014.68
5.3.100.0130.07014.09
5.3.90.0000.08014.11
5.3.80.0070.06314.09
5.3.70.0100.05014.16
5.3.60.0100.04314.14
5.3.50.0100.06314.08
5.3.40.0070.07713.91
5.3.30.0070.07014.13
5.3.20.0070.07713.88
5.3.10.0070.03713.66
5.3.00.0030.07713.82
5.2.170.0070.06713.60
5.2.160.0100.05313.60
5.2.150.0070.06313.60
5.2.140.0070.06313.60
5.2.130.0030.04313.60
5.2.120.0030.03713.60
5.2.110.0030.05313.60
5.2.100.0100.05713.60
5.2.90.0100.05713.60
5.2.80.0070.06013.60
5.2.70.0000.07013.60
5.2.60.0030.03713.60
5.2.50.0030.06313.60
5.2.40.0130.05713.60
5.2.30.0030.05013.60
5.2.20.0030.03713.60
5.2.10.0030.06013.60
5.2.00.0070.05713.60
5.1.60.0030.05313.60
5.1.50.0030.05313.60
5.1.40.0100.04713.60
5.1.30.0130.04713.60
5.1.20.0000.06313.60
5.1.10.0030.05313.60
5.1.00.0030.05313.60
5.0.50.0070.04713.60
5.0.40.0000.03313.60
5.0.30.0030.05013.60
5.0.20.0000.04013.60
5.0.10.0000.04713.60
5.0.00.0030.05713.60
4.4.90.0030.02013.60
4.4.80.0030.01313.60
4.4.70.0030.03713.60
4.4.60.0000.03013.60
4.4.50.0100.02713.60
4.4.40.0070.03713.60
4.4.30.0030.03013.60
4.4.20.0030.03713.60
4.4.10.0100.03013.60
4.4.00.0030.05313.60
4.3.110.0000.03013.60
4.3.100.0030.03013.60
4.3.90.0030.03313.60
4.3.80.0000.04713.60
4.3.70.0030.03013.60
4.3.60.0030.02713.60
4.3.50.0030.03313.60
4.3.40.0000.03313.60
4.3.30.0000.03713.60
4.3.20.0000.02313.60
4.3.10.0000.03713.60
4.3.00.0000.03713.60

preferences:
26.73 ms | 401 KiB | 5 Q