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 - $startTimeMerge) ." seconds<br />\n"; echo "Foreach took " . ($endTimeForeach - $startTimeForeach) ." 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)
7.3.10.0100.00316.70
7.3.00.0060.00316.72
7.2.130.0090.00616.73
7.2.120.0040.00816.90
7.2.110.0030.00816.71
7.2.100.0070.00916.84
7.2.90.0110.00516.91
7.2.80.0050.01116.88
7.2.70.0090.00517.00
7.2.60.0060.00916.98
7.2.50.0020.01216.89
7.2.40.0090.00716.94
7.2.30.0060.00916.94
7.2.20.0060.01016.97
7.2.10.0080.00716.80
7.2.00.0030.01017.93
7.1.250.0090.00315.69
7.1.240.0060.00615.52
7.1.230.0080.00515.80
7.1.220.0070.00715.67
7.1.210.0060.00615.90
7.1.200.0060.01015.82
7.1.190.0040.01115.86
7.1.180.0120.00315.76
7.1.170.0040.01115.85
7.1.160.0030.01015.83
7.1.150.0070.00716.03
7.1.140.0030.00915.77
7.1.130.0120.00315.57
7.1.120.0100.00315.90
7.1.110.0130.00315.68
7.1.100.0060.00615.58
7.1.90.0060.00616.02
7.1.80.0000.01215.82
7.1.70.0040.00716.52
7.1.60.0070.01217.71
7.1.50.0090.01525.28
7.1.40.0110.00315.81
7.1.30.0030.00915.90
7.1.20.0030.01215.69
7.1.10.0060.00615.81
7.1.00.0090.02919.21
7.0.320.0110.00415.29
7.0.310.0030.00715.29
7.0.300.0060.00615.44
7.0.290.0070.00715.47
7.0.280.0000.01615.39
7.0.270.0030.00715.53
7.0.260.0030.00615.39
7.0.250.0080.00515.51
7.0.240.0040.01115.28
7.0.230.0000.01115.59
7.0.220.0090.00315.47
7.0.210.0000.01015.28
7.0.200.0210.00615.06
7.0.190.0060.00615.43
7.0.180.0080.00315.32
7.0.170.0030.01015.45
7.0.160.0130.00015.20
7.0.150.0030.00915.52
7.0.140.0020.04318.77
7.0.130.0090.00315.42
7.0.120.0080.03618.84
7.0.110.0030.01015.49
7.0.100.0040.01215.21
7.0.90.0040.00915.44
7.0.80.0080.00815.64
7.0.70.0030.00915.48
7.0.60.0080.04017.53
7.0.50.0060.03216.63
7.0.40.0030.03216.85
7.0.30.0170.02516.85
7.0.20.0130.02216.95
7.0.10.0200.04116.76
7.0.00.0050.03816.87
5.6.380.0060.00314.16
5.6.370.0040.00714.50
5.6.360.0030.01014.40
5.6.350.0030.01014.17
5.6.340.0090.00614.46
5.6.330.0030.01014.57
5.6.320.0060.00914.23
5.6.310.0110.00414.46
5.6.300.0110.00414.27
5.6.290.0090.00614.09
5.6.280.0070.00714.43
5.6.270.0130.00014.36
5.6.260.0040.01114.72
5.6.250.0080.00814.24
5.6.240.0090.00314.35
5.6.230.0040.00414.32
5.6.220.0100.00314.52
5.6.210.0070.05017.48
5.6.200.0070.04616.27
5.6.190.0090.04417.46
5.6.180.0120.03517.68
5.6.170.0150.03717.44
5.6.160.0050.04717.31
5.6.150.0050.03616.31
5.6.140.0120.03816.32
5.6.130.0030.04916.34
5.6.120.0120.04317.92
5.6.110.0140.03517.60
5.6.100.0090.04017.77
5.6.90.0080.03817.61
5.6.80.0110.03717.27
5.6.70.0170.04217.36
5.6.60.0000.01214.47
5.6.50.0070.00714.56
5.6.40.0060.00914.15
5.6.30.0060.00614.22
5.6.20.0030.00914.43
5.6.10.0070.01014.22
5.6.00.0000.01114.56
5.5.380.0070.00311.47
5.5.370.0090.00311.27
5.5.360.0000.00511.00
5.5.350.0170.02715.79
5.5.340.0060.03014.73
5.5.330.0080.03515.81
5.5.320.0100.02515.90
5.5.310.0120.04215.82
5.5.300.0060.02514.48
5.5.290.0080.03914.54
5.5.280.0060.02315.98
5.5.270.0020.04016.06
5.5.260.0060.02115.88
5.5.250.0050.04216.04
5.5.240.0030.04515.57
5.5.230.0060.00610.98
5.5.220.0000.00811.14
5.5.210.0060.00611.23
5.5.200.0040.00810.92
5.5.190.0040.00410.82
5.5.180.0040.00411.27
5.5.170.0030.01014.27
5.5.160.0030.00911.38
5.5.150.0040.00811.22
5.5.140.0040.00810.99
5.5.130.0030.00911.27
5.5.120.0080.00311.24
5.5.110.0060.00311.05
5.5.100.0040.00711.32
5.5.90.0000.01011.13
5.5.80.0070.00311.30
5.5.70.0040.00811.21
5.5.60.0040.00411.31
5.5.50.0030.00711.35
5.5.40.0040.00810.94
5.5.30.0040.00411.14
5.5.20.0050.00311.38
5.5.10.0030.00611.18
5.5.00.0000.01211.22
5.4.450.0120.03715.40
5.4.440.0140.03315.23
5.4.430.0150.03515.30
5.4.420.0130.04515.39
5.4.410.0150.04215.15
5.4.400.0170.02715.19
5.4.390.0200.03215.13
5.4.380.0170.02715.18
5.4.370.0150.03015.02
5.4.360.0180.02515.12
5.4.350.0200.02214.92
5.4.340.0230.02515.05
5.4.330.0060.00310.79
5.4.320.0190.03015.23
5.4.310.0180.01814.94
5.4.300.0150.04215.01
5.4.290.0150.03015.06
5.4.280.0130.02615.09
5.4.270.0180.03715.02
5.4.260.0210.03515.02
5.4.250.0180.04015.16
5.4.240.0200.03314.97
5.4.230.0230.02015.02
5.4.220.0190.02515.15
5.4.210.0150.03815.11
5.4.200.0180.03914.86
5.4.190.0140.02915.09
5.4.180.0200.03414.97
5.4.170.0140.02815.08
5.4.160.0250.03215.10
5.4.150.0180.03615.09
5.4.140.0150.03913.78
5.4.130.0200.03413.77
5.4.120.0200.03213.69
5.4.110.0180.02013.63
5.4.100.0130.03413.58
5.4.90.0170.01913.63
5.4.80.0170.03813.55
5.4.70.0210.03213.73
5.4.60.0170.03313.75
5.4.50.0150.04313.78
5.4.40.0160.03113.79
5.4.30.0250.03013.63
5.4.20.0180.03313.61
5.4.10.0190.03513.75
5.4.00.0190.03013.34
5.3.290.0190.03912.60
5.3.280.0150.04012.49
5.3.270.0170.02512.54
5.3.260.0170.03712.52
5.3.250.0130.04012.61
5.3.240.0120.02912.47
5.3.230.0200.03312.44
5.3.220.0150.03512.51
5.3.210.0130.04212.47
5.3.200.0220.03412.51
5.3.190.0140.02712.62
5.3.180.0150.02712.39
5.3.170.0190.03812.49
5.3.160.0230.03212.55
5.3.150.0180.04012.51
5.3.140.0150.02712.37
5.3.130.0170.02612.44
5.3.120.0160.03612.42
5.3.110.0100.03512.58
5.3.100.0220.03012.20
5.3.90.0190.03712.22
5.3.80.0190.03612.12
5.3.70.0210.02312.07
5.3.60.0200.02912.24
5.3.50.0120.02612.19
5.3.40.0150.04012.13
5.3.30.0120.02612.13
5.3.20.0170.03512.02
5.3.10.0150.02911.90
5.3.00.0190.02911.95
5.2.170.0150.01311.28
5.2.160.0130.02811.28
5.2.150.0220.01711.28
5.2.140.0130.03211.28
5.2.130.0080.02811.28
5.2.120.0100.02111.28
5.2.110.0170.02911.28
5.2.100.0130.03411.28
5.2.90.0130.02011.28
5.2.80.0150.02111.28
5.2.70.0180.02811.28
5.2.60.0110.03311.28
5.2.50.0150.03211.28
5.2.40.0120.03311.28
5.2.30.0070.03511.28
5.2.20.0110.03311.28
5.2.10.0070.03311.28
5.2.00.0120.02911.28
5.1.60.0100.01711.28
5.1.50.0120.02011.28
5.1.40.0130.02511.28
5.1.30.0160.02311.28
5.1.20.0130.01411.28
5.1.10.0110.02611.28
5.1.00.0120.02511.28
5.0.50.0090.01311.28
5.0.40.0070.01711.28
5.0.30.0100.02211.28
5.0.20.0060.01311.28
5.0.10.0060.02111.28
5.0.00.0080.02011.28
4.4.90.0050.02211.28
4.4.80.0070.01211.28
4.4.70.0080.01811.28
4.4.60.0030.01911.28
4.4.50.0070.01211.28
4.4.40.0050.01811.28
4.4.30.0070.01811.28
4.4.20.0030.01211.28
4.4.10.0070.01811.28
4.4.00.0070.02711.28
4.3.110.0070.01011.28
4.3.100.0080.01011.28
4.3.90.0060.00811.28
4.3.80.0050.03111.28
4.3.70.0070.01011.28
4.3.60.0070.01411.28
4.3.50.0070.01211.28
4.3.40.0070.01311.28
4.3.30.0050.01811.28
4.3.20.0050.01811.28
4.3.10.0030.01811.28
4.3.00.0030.01711.28

preferences:
39.12 ms | 400 KiB | 5 Q