3v4l.org

run code in 300+ PHP versions simultaneously
<?php $root = array( 1=>'cat1', 2=>'cat2', 3=>'cat3' ); $child_1 = array( 1=>'sub_cat1', 2=>'sub_cat2', 3=>'sub_cat3' ); $child_2 = array( 1=>'sub_sub_cat1', 2=>'sub_sub_cat2', 3=>'sub_sub_cat3' ); function getAllCombinationsArray($source_arrays = array(), $key = '', $value = ''){ $return = array(); $current = array_shift($source_arrays); foreach($current as $ck => $cv) { $ckey = $key.$ck; $cvalue = $value.$cv; if(!empty($source_arrays)) { $return += getAllCombinationsArray($source_arrays, $ckey.'_', $cvalue.' -> '); } else { $return[$ckey] = $cvalue; } return $return; } print_r(getAllCombinationsArray(array($root, $child_1, $child_2)));

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)
5.4.340.0040.03612.02
5.4.320.0080.03412.52
5.4.310.0120.03512.52
5.4.300.0090.03212.52
5.4.290.0020.04012.52
5.4.280.0070.03312.41
5.4.270.0050.03612.41
5.4.260.0050.03712.41
5.4.250.0090.04212.41
5.4.240.0050.03612.41
5.4.230.0070.03612.40
5.4.220.0060.03612.40
5.4.210.0110.03412.40
5.4.200.0070.03612.40
5.4.190.0050.03612.39
5.4.180.0080.03612.39
5.4.170.0040.04012.40
5.4.160.0050.03612.40
5.4.150.0080.03912.39
5.4.140.0080.03512.08
5.4.130.0060.03412.07
5.4.120.0080.04212.03
5.4.110.0060.03812.02
5.4.100.0040.03612.03
5.4.90.0030.04112.02
5.4.80.0060.04012.03
5.4.70.0060.03312.02
5.4.60.0040.03512.02
5.4.50.0100.03012.02
5.4.40.0110.03412.01
5.4.30.0030.03812.01
5.4.20.0030.03812.00
5.4.10.0070.03512.00
5.4.00.0070.03511.50
5.3.290.0010.04312.80
5.3.280.0070.04212.71
5.3.270.0060.04912.73
5.3.260.0060.04412.72
5.3.250.0090.03712.72
5.3.240.0070.03612.72
5.3.230.0090.03312.70
5.3.220.0070.03412.68
5.3.210.0050.03812.68
5.3.200.0040.03712.68
5.3.190.0050.04112.68
5.3.180.0080.03412.67
5.3.170.0070.03412.67
5.3.160.0030.03812.67
5.3.150.0050.03812.67
5.3.140.0060.03512.66
5.3.130.0030.04012.65
5.3.120.0050.04012.66
5.3.110.0060.03912.66
5.3.100.0080.03412.13
5.3.90.0080.03312.12
5.3.80.0080.03412.10
5.3.70.0060.03412.10
5.3.60.0050.03612.08
5.3.50.0080.03412.04
5.3.40.0070.03612.04
5.3.30.0060.03411.99
5.3.20.0100.03511.77
5.3.10.0070.03811.73
5.3.00.0070.04011.73
5.2.170.0030.0319.23
5.2.160.0040.0309.23
5.2.150.0020.0329.23
5.2.140.0070.0289.22
5.2.130.0060.0289.19
5.2.120.0070.0259.18
5.2.110.0070.0289.19
5.2.100.0040.0299.18
5.2.90.0040.0299.18
5.2.80.0060.0289.18
5.2.70.0060.0279.18
5.2.60.0030.0319.14
5.2.50.0080.0359.11
5.2.40.0040.0309.08
5.2.30.0040.0309.05
5.2.20.0030.0319.04
5.2.10.0070.0258.95
5.2.00.0060.0348.82
5.1.60.0050.0268.10
5.1.50.0060.0228.09
5.1.40.0060.0218.07
5.1.30.0040.0268.42
5.1.20.0040.0278.45
5.1.10.0060.0238.17
5.1.00.0060.0288.17
5.0.50.0060.0206.66
5.0.40.0030.0196.52
5.0.30.0010.0336.34
5.0.20.0040.0186.30
5.0.10.0030.0196.28
5.0.00.0020.0316.27
4.4.90.0040.0134.78
4.4.80.0020.0154.75
4.4.70.0020.0154.76
4.4.60.0020.0164.75
4.4.50.0020.0154.77
4.4.40.0030.0244.71
4.4.30.0020.0164.76
4.4.20.0050.0214.84
4.4.10.0040.0254.85
4.4.00.0030.0304.75
4.3.110.0050.0124.66
4.3.100.0020.0244.66
4.3.90.0030.0134.63
4.3.80.0040.0264.58
4.3.70.0020.0154.63
4.3.60.0030.0134.63
4.3.50.0020.0184.63
4.3.40.0040.0264.54
4.3.30.0030.0173.31
4.3.20.0030.0143.29
4.3.10.0010.0163.25
4.3.00.0000.0237.17

preferences:
135.79 ms | 1394 KiB | 7 Q