Online PHP editor | perf for 8GUqF

<?php const VLANS = [ 'default' => [ 'prefix' => '', ], 'iutsb_rech' => [ 'prefix' => '129.20.', ], 'iutsb_etu' => [ 'prefix' => '148.60.', ] ]; const SHORT_VLANS = [ 'e' => 'iutsb_etu', 'r' => 'iutsb_rech', ]; function a($hostname) { $vlanShort = substr($hostname, 1, 1); if (!array_key_exists($vlanShort, self::SHORT_VLANS)) { return false; } $prefix = self::VLANS[self::SHORT_VLANS[$vlanShort]]['prefix']; $prefixLength = substr_count($prefix, '.'); $hostnameLength = strlen($hostname); $ip = []; for ($i = $prefixLength; $i < 4; $i++) { $ip[] = intval(substr($hostname, $hostnameLength + (($i - 4) * 3), 3)); } return $prefix . implode('.', $ip); } echo a('me212128');

Version	System time (s)	User time (s)	Memory (MiB)
7.0.0	0.003	0.043	20.14
5.6.16	0.020	0.070	20.72
5.6.15	0.000	0.057	18.20
5.6.14	0.007	0.080	18.19
5.6.13	0.013	0.077	18.28
5.6.12	0.007	0.043	21.13
5.6.11	0.013	0.077	21.02
5.6.10	0.007	0.040	20.99
5.6.9	0.017	0.073	21.11
5.6.8	0.000	0.043	20.41
5.5.30	0.007	0.067	18.02
5.5.29	0.013	0.077	17.95
5.5.28	0.003	0.063	20.96
5.5.27	0.003	0.060	20.75
5.5.26	0.010	0.043	20.79
5.5.25	0.003	0.083	20.54
5.5.24	0.023	0.063	20.19

Version

System time (s)

User time (s)

Memory (MiB)

7.0.0

0.003

0.043

20.14

5.6.16

0.020

0.070

20.72

5.6.15

0.000

0.057

18.20

5.6.14

0.007

0.080

18.19

5.6.13

0.013

0.077

18.28

5.6.12

0.007

0.043

21.13

5.6.11

0.013

0.077

21.02

5.6.10

0.007

0.040

20.99

5.6.9

0.017

0.073

21.11

5.6.8

0.000

0.043

20.41

5.5.30

0.007

0.067

18.02

5.5.29

0.013

0.077

17.95

5.5.28

0.003

0.063

20.96

5.5.27

0.003

0.060

20.75

5.5.26

0.010

0.043

20.79

5.5.25

0.003

0.083

20.54

5.5.24

0.023

0.063

20.19