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); $startTimeReplace = microtime(true); $map = array_replace($classmap1, $classmap2); $endTimeReplace = microtime(true); $startTimeForeach = microtime(true); foreach ($classmap2 as $k => $v) { $classmap1[$k] = $v; } $endTimeForeach = microtime(true); echo "array_merge - " . (($endTimeMerge - $startTimeMerge)*1000) ." microseconds<br />\n"; echo "array_replace - " . (($endTimeReplace - $startTimeReplace)*1000) ." microseconds<br />\n"; echo "foreach - " . (($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)
7.2.00.0040.01423.29
7.1.70.0080.00322.98
7.1.60.0100.01623.02
7.1.50.0100.01922.75
7.1.00.0030.05028.17
7.0.200.0180.00922.50
7.0.140.0170.06728.12
7.0.100.0030.08723.67
7.0.90.1070.07723.65
7.0.80.0930.09323.54
7.0.70.1100.09025.04
7.0.60.0330.08323.47
7.0.50.0430.08323.98
7.0.40.0130.06720.02
7.0.30.0130.07720.10
7.0.20.0130.08019.96
7.0.10.0030.09320.18
7.0.00.0100.08720.14
5.6.280.0100.08728.13
5.6.250.0070.09727.82
5.6.240.0100.09327.83
5.6.230.0170.08327.72
5.6.220.0030.06027.74
5.6.210.0170.08027.79
5.6.200.0100.10028.36
5.6.190.0030.10028.24
5.6.180.0070.10028.36
5.6.170.0070.10028.31
5.6.160.0130.09328.30
5.6.150.0200.07728.29
5.6.140.0070.08328.36
5.6.130.0170.07728.32
5.6.120.0270.08728.24
5.6.110.0100.10328.30
5.6.100.0130.09728.38
5.6.90.0200.09728.28
5.6.80.0100.09327.69
5.6.70.0200.09327.54
5.6.60.0130.05727.60
5.6.50.0070.05727.65
5.6.40.0070.05027.59
5.6.30.0170.04327.68
5.6.20.0100.10727.62
5.6.10.0200.06027.65
5.6.00.0070.06027.61
5.5.380.0130.07727.72
5.5.370.0130.07327.79
5.5.360.0100.09027.56
5.5.350.0100.09727.61
5.5.340.0230.07327.87
5.5.330.0170.08028.03
5.5.320.0030.08328.12
5.5.310.0130.09027.98
5.5.300.0170.08328.05
5.5.290.0170.08728.11
5.5.280.0130.10028.00
5.5.270.0000.08027.86
5.5.260.0200.10327.99
5.5.250.0100.08327.90
5.5.240.0100.09727.49
5.5.230.0070.08727.40
5.5.220.0070.05027.52
5.5.210.0030.06727.25
5.5.200.0070.04727.48
5.5.190.0070.10027.38
5.5.180.0130.04727.43
5.5.160.0070.06027.49
5.5.150.0130.08327.21
5.5.140.0070.06327.40
5.5.130.0130.05327.35
5.5.120.0130.08727.46
5.5.110.0070.05327.39
5.5.100.0170.07727.30
5.5.90.0100.06027.23
5.5.80.0030.06727.38
5.5.70.0030.05027.33
5.5.60.0130.06027.31
5.5.50.0000.05329.15
5.5.40.0170.07029.16
5.5.30.0130.11329.13
5.5.20.0170.10029.15
5.5.10.0170.09029.14
5.5.00.0430.07729.21
5.4.450.0130.09028.41
5.4.440.0230.08328.32
5.4.430.0100.09028.38
5.4.420.0100.10028.40
5.4.410.0170.08728.23
5.4.400.0070.07328.09
5.4.390.0070.08728.01
5.4.380.0100.05028.36
5.4.370.0030.05327.89
5.4.360.0000.05328.01
5.4.350.0070.08728.01
5.4.340.0100.07728.07
5.4.320.0130.07328.16
5.4.310.0170.04728.03
5.4.300.0230.04727.94
5.4.290.0070.06028.04
5.4.280.0130.05727.83
5.4.270.0000.08728.14
5.4.260.0130.05327.99
5.4.250.0030.05028.00
5.4.240.0100.07328.18
5.4.230.0130.04028.04
5.4.220.0100.07728.08
5.4.210.0200.07027.93
5.4.200.0170.08727.82
5.4.190.0100.09327.99
5.4.180.0170.09028.18
5.4.170.0200.05728.15
5.4.160.0100.10027.98
5.4.150.0170.08327.96
5.4.140.0070.10725.40
5.4.130.0130.08725.10
5.4.120.0100.08325.37
5.4.110.0130.09025.49
5.4.100.0130.09025.45
5.4.90.0070.07325.39
5.4.80.0130.08025.41
5.4.70.0230.08325.43
5.4.60.0100.05325.36
5.4.50.0100.09025.49
5.4.40.0100.05325.27
5.4.30.0070.09325.32
5.4.20.0100.06725.35
5.4.10.0300.07725.18
5.4.00.0070.09724.77
5.3.290.0170.04723.33
5.3.280.0070.09323.46
5.3.270.0100.08723.33
5.3.260.0100.09323.38
5.3.250.0070.09323.41
5.3.240.0200.08323.47
5.3.230.0170.08723.40
5.3.220.0100.08723.39
5.3.210.0130.09323.39
5.3.200.0200.08723.43
5.3.190.0130.08723.29
5.3.180.0070.10023.30
5.3.170.0100.07723.27
5.3.160.0130.09023.44
5.3.150.0230.05323.30
5.3.140.0170.08723.28
5.3.130.0000.10723.44
5.3.120.0070.10023.41
5.3.110.0030.09023.35
5.3.100.0130.09022.86
5.3.90.0100.09722.75
5.3.80.0070.06022.75
5.3.70.0200.08322.82
5.3.60.0170.08022.73
5.3.50.0100.09022.59
5.3.40.0070.06022.61
5.3.30.0070.08022.71
5.3.20.0070.09322.50
5.3.10.0100.08722.46
5.3.00.0170.08020.23
5.2.170.0100.07717.77
5.2.160.0000.07717.61
5.2.150.0030.07717.80
5.2.140.0000.05017.88
5.2.130.0100.07017.73
5.2.120.0030.08017.69
5.2.110.0130.06717.69
5.2.100.0030.08017.76
5.2.90.0070.08017.73
5.2.80.0130.07017.68
5.2.70.0000.08017.62
5.2.60.0100.04717.58
5.2.50.0170.06317.57
5.2.40.0000.08717.58
5.2.30.0200.06317.68
5.2.20.0100.07017.54
5.2.10.0070.07717.60
5.2.00.0030.07317.37
5.1.60.0100.06318.23
5.1.50.0070.04318.05
5.1.40.0070.07718.00
5.1.30.0100.04018.42
5.1.20.0030.05018.29
5.1.10.0070.07018.34
5.1.00.0030.04718.26
5.0.50.0100.03016.71
5.0.40.0100.06716.58
5.0.30.0000.06316.39
5.0.20.0070.04716.45
5.0.10.0070.07016.27
5.0.00.0000.06016.43
4.4.90.0070.06314.22
4.4.80.0130.05014.11
4.4.70.0070.05714.21
4.4.60.0130.05714.03
4.4.50.0130.03714.07
4.4.40.0100.04313.98
4.4.30.0030.07014.10
4.4.20.0100.02314.07
4.4.10.0100.03714.17
4.4.00.0000.08714.19
4.3.110.0000.05714.13
4.3.100.0100.02314.13
4.3.90.0030.04014.03
4.3.80.0070.03713.92
4.3.70.0070.04314.08
4.3.60.0100.05714.14
4.3.50.0030.06714.15
4.3.40.0030.08313.98
4.3.30.0000.03712.74
4.3.20.0100.03312.88
4.3.10.0100.05712.75
4.3.00.0030.04012.74

preferences:
40.65 ms | 401 KiB | 5 Q