3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $input = [ 'a.b.c.d = 1', 'a.b.c.e = Joey', 'a.b.c.f = Smith', 'a.b.g.d = 2', 'a.b.g.e = Chris', 'a.b.g.f = Divner' ]; $data = []; $cleanKeys = []; foreach($input as $record) { $equals = strrpos($record, '='); $value = trim(substr($record, $equals+1)); $key = trim(substr($record, 0, $equals)); $lastDot = strrpos($key, '.'); $appKey = substr($key, $lastDot+1); $curKey = substr($key, 0, $lastDot); $data[$curKey][$appKey] = $value; if (strpos($curKey, '.') !== FALSE) { $cleanKeys[] = $curKey; } } foreach($data as $k => $v){ $keys = explode('.', $k); $firstKey = array_shift($keys); $newData = []; while($key = array_pop($keys)) { if (count($newData) === 0) { $newData[$key] = $v; } else { $newData = [$key => $newData]; } } $data = array_merge_recursive($data, $newData); unset($data[$k]); } echo var_export($data);
based on lWECX

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).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0000.01019.07
7.1.100.0120.00617.84
7.1.70.0110.00017.09
7.1.60.0070.01619.46
7.1.50.0100.01016.78
7.1.00.0130.06322.44
7.0.200.0050.00216.69
7.0.140.0070.03722.02
7.0.100.0170.04320.18
7.0.90.0100.03319.91
7.0.80.0030.04020.13
7.0.70.0030.04019.93
7.0.60.0070.04319.86
7.0.50.0130.03320.27
7.0.40.0030.04320.06
7.0.30.0000.05020.03
7.0.20.0070.04020.07
7.0.10.0100.03720.14
7.0.00.0030.03719.95
5.6.280.0030.07321.08
5.6.250.0070.04020.54
5.6.240.0030.04320.77
5.6.230.0100.03720.61
5.6.220.0030.04020.65
5.6.210.0130.03020.69
5.6.200.0000.04721.09
5.6.190.0070.04020.96
5.6.180.0070.04021.11
5.6.170.0030.04020.94
5.6.160.0030.04020.97
5.6.150.0070.04321.11
5.6.140.0100.06321.11
5.6.130.0070.03720.95
5.6.120.0130.03321.04
5.6.110.0000.09020.93
5.6.100.0030.08021.07
5.6.90.0130.07721.01
5.6.80.0030.08320.52
5.6.70.0030.09020.48
5.6.60.0070.08020.43
5.6.50.0070.07720.43
5.6.40.0100.06720.37
5.6.30.0100.07320.38
5.6.20.0100.07720.38
5.6.10.0070.05020.44
5.6.00.0070.06720.41
5.5.380.0070.05720.46
5.5.370.0030.04020.47
5.5.360.0100.03320.35
5.5.350.0030.05320.47
5.5.340.0000.04320.95
5.5.330.0000.04320.93
5.5.320.0070.04720.89
5.5.310.0070.03720.81
5.5.300.0070.03720.64
5.5.290.0030.04320.74
5.5.280.0070.07020.92
5.5.270.0070.05320.82
5.5.260.0070.08020.83
5.5.250.0130.07720.71
5.5.240.0070.08020.16
5.5.230.0100.07720.27
5.5.220.0070.08020.19
5.5.210.0100.07020.25
5.5.200.0100.07720.17
5.5.190.0070.06320.24
5.5.180.0070.07720.00
5.5.160.0070.08020.24
5.5.150.0130.07320.22
5.5.140.0100.04320.23
5.5.130.0130.07020.13
5.5.120.0070.08020.15
5.5.110.0070.05020.12
5.5.100.0100.07320.14
5.5.90.0100.05020.17
5.5.80.0100.04320.05
5.5.70.0100.08019.92
5.5.60.0130.07320.10
5.5.50.0230.06020.04
5.5.40.0030.07720.00
5.5.30.0030.08020.15
5.5.20.0100.04020.04
5.5.10.0100.07720.05
5.5.00.0200.06320.08
5.4.450.0100.04019.40
5.4.440.0100.07719.46
5.4.430.0070.07319.35
5.4.420.0070.08019.27
5.4.410.0130.07019.34
5.4.400.0000.09018.79
5.4.390.0070.08019.07
5.4.380.0070.07719.12
5.4.370.0100.06319.08
5.4.360.0070.07319.12
5.4.350.0030.05019.04
5.4.340.0030.07718.97
5.4.320.0100.07319.15
5.4.310.0070.07318.98
5.4.300.0070.06018.90
5.4.290.0030.07718.95
5.4.280.0100.07019.23
5.4.270.0170.06719.14
5.4.260.0070.04319.14
5.4.250.0100.07319.05
5.4.240.0070.07318.75
5.4.230.0130.06319.02
5.4.220.0070.08019.04
5.4.210.0130.06719.02
5.4.200.0030.04318.81
5.4.190.0100.04018.90
5.4.180.0100.06319.05
5.4.170.0070.08318.94
5.4.160.0000.04719.11
5.4.150.0030.07319.04
5.4.140.0100.05016.25
5.4.130.0000.04716.14
5.4.120.0030.05316.26
5.4.110.0070.07016.23
5.4.100.0000.06716.39
5.4.90.0070.04716.22
5.4.80.0070.06716.43
5.4.70.0100.06316.24
5.4.60.0070.04016.24
5.4.50.0070.07716.20
5.4.40.0000.05716.42
5.4.30.0070.07016.18
5.4.20.0070.06716.47
5.4.10.0030.07716.23
5.4.00.0100.05715.71
5.3.290.0030.08014.63
5.3.280.0130.06014.55
5.3.270.0070.07714.47
5.3.260.0070.03714.52
5.3.250.0000.04014.47
5.3.240.0100.06314.52
5.3.230.0000.07014.54
5.3.220.0070.05714.53
5.3.210.0000.07014.43
5.3.200.0000.08314.43
5.3.190.0000.04014.57
5.3.180.0130.06714.57
5.3.170.0070.07014.55
5.3.160.0100.06314.43
5.3.150.0030.04314.53
5.3.140.0070.04714.52
5.3.130.0100.06714.55
5.3.120.0100.06714.49
5.3.110.0070.04314.50
5.3.100.0030.08014.00
5.3.90.0070.03714.02
5.3.80.0100.07014.02
5.3.70.0070.07713.88
5.3.60.0070.07013.86
5.3.50.0070.06713.88
5.3.40.0070.07313.88
5.3.30.0070.07013.90
5.3.20.0070.07313.64
5.3.10.0070.07313.62
5.3.00.0030.06013.63
5.2.170.0070.06310.98
5.2.160.0030.05311.02
5.2.150.0000.06711.18
5.2.140.0070.05711.13
5.2.130.0070.05711.16
5.2.120.0170.03311.13
5.2.110.0230.04311.02
5.2.100.0070.06011.12
5.2.90.0030.06011.17
5.2.80.0030.06711.09
5.2.70.0070.06011.14
5.2.60.0100.03011.01
5.2.50.0070.05011.01
5.2.40.0100.05310.95
5.2.30.0200.02310.96
5.2.20.0030.06310.99
5.2.10.0070.04310.77
5.2.00.0070.05710.73
5.1.60.0000.04010.02
5.1.50.0130.04010.00
5.1.40.0130.0409.81
5.1.30.0000.03310.34
5.1.20.0070.06010.27
5.1.10.0070.04710.15
5.1.00.0070.02710.08
5.0.50.0070.0438.83
5.0.40.0100.0408.83
5.0.30.0030.0638.83
5.0.20.0000.0278.83
5.0.10.0030.0438.83
5.0.00.0070.0638.83
4.4.90.0000.0208.83
4.4.80.0030.0338.83
4.4.70.0030.0178.83
4.4.60.0000.0378.83
4.4.50.0030.0178.83
4.4.40.0000.0508.83
4.4.30.0000.0378.83
4.4.20.0000.0378.83
4.4.10.0100.0278.83
4.4.00.0000.0438.83
4.3.110.0000.0378.83
4.3.100.0000.0378.83
4.3.90.0000.0378.83
4.3.80.0030.0538.83
4.3.70.0070.0308.83
4.3.60.0000.0208.83
4.3.50.0070.0278.83
4.3.40.0070.0378.83
4.3.30.0030.0138.83
4.3.20.0000.0278.83
4.3.10.0030.0378.83
4.3.00.0000.0338.83