3v4l.org

run code in 300+ PHP versions simultaneously
<?php $host = parse_url($_SERVER['SERVER_NAME']); preg_match('/(.*?)((\.co)?[a-z]{2,4})$/i', $host['host'], $m); $ext = isset($m[2]) ? $m[2]: 'nl'; var_dump($ext);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 17
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 18
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LIj5J
function name:  (null)
number of ops:  23
compiled vars:  !0 = $host, !1 = $m, !2 = $ext
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'parse_url'
          1        FETCH_R                      global              ~3      '_SERVER'
          2        FETCH_DIM_R                                      ~4      ~3, 'SERVER_NAME'
          3        SEND_VAL                                                 ~4
          4        DO_ICALL                                         $5      
          5        ASSIGN                                                   !0, $5
    3     6        INIT_FCALL                                               'preg_match'
          7        SEND_VAL                                                 '%2F%28.%2A%3F%29%28%28%5C.co%29%3F%5Ba-z%5D%7B2%2C4%7D%29%24%2Fi'
          8        FETCH_DIM_R                                      ~7      !0, 'host'
          9        SEND_VAL                                                 ~7
         10        SEND_REF                                                 !1
         11        DO_ICALL                                                 
    4    12        ISSET_ISEMPTY_DIM_OBJ                         0          !1, 2
         13      > JMPZ                                                     ~9, ->17
         14    >   FETCH_DIM_R                                      ~10     !1, 2
         15        QM_ASSIGN                                        ~11     ~10
         16      > JMP                                                      ->18
         17    >   QM_ASSIGN                                        ~11     'nl'
         18    >   ASSIGN                                                   !2, ~11
    5    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !2
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.67 ms | 1395 KiB | 19 Q