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<?php $pattern = "#^(([gG][iI][rR] {0,}0[aA]{2})|((([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y]?[0-9][0-9]?)|(([a-pr-uwyzA-PR-UWYZ][0-9][a-hjkstuwA-HJKSTUW])|([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y][0-9][abehmnprv-yABEHMNPRV-Y])))( {0,}[0-9][abd-hjlnp-uw-zABD-HJLNP-UW-Z]{2})?))$#"; $check = array( "LE1 1AA", "LE1", "SN5" ); $match = null; foreach($check as $c){ if(preg_match($pattern, $c, $match)){ echo "$c matches -> {$match[0]}\n"; } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 4, Position 2 = 18
Branch analysis from position: 4
2 jumps found. (Code = 78) Position 1 = 5, Position 2 = 18
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 17
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 17
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
filename:       /in/tZhgP
function name:  (null)
number of ops:  20
compiled vars:  !0 = $pattern, !1 = $check, !2 = $match, !3 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%23%5E%28%28%5BgG%5D%5BiI%5D%5BrR%5D+%7B0%2C%7D0%5BaA%5D%7B2%7D%29%7C%28%28%28%5Ba-pr-uwyzA-PR-UWYZ%5D%5Ba-hk-yA-HK-Y%5D%3F%5B0-9%5D%5B0-9%5D%3F%29%7C%28%28%5Ba-pr-uwyzA-PR-UWYZ%5D%5B0-9%5D%5Ba-hjkstuwA-HJKSTUW%5D%29%7C%28%5Ba-pr-uwyzA-PR-UWYZ%5D%5Ba-hk-yA-HK-Y%5D%5B0-9%5D%5Babehmnprv-yABEHMNPRV-Y%5D%29%29%29%28+%7B0%2C%7D%5B0-9%5D%5Babd-hjlnp-uw-zABD-HJLNP-UW-Z%5D%7B2%7D%29%3F%29%29%24%23'
    4     1        ASSIGN                                                   !1, <array>
   10     2        ASSIGN                                                   !2, null
   11     3      > FE_RESET_R                                       $7      !1, ->18
          4    > > FE_FETCH_R                                               $7, !3, ->18
   12     5    >   INIT_FCALL                                               'preg_match'
          6        SEND_VAR                                                 !0
          7        SEND_VAR                                                 !3
          8        SEND_REF                                                 !2
          9        DO_ICALL                                         $8      
         10      > JMPZ                                                     $8, ->17
   13    11    >   ROPE_INIT                                     4  ~11     !3
         12        ROPE_ADD                                      1  ~11     ~11, '+matches+-%3E+'
         13        FETCH_DIM_R                                      ~9      !2, 0
         14        ROPE_ADD                                      2  ~11     ~11, ~9
         15        ROPE_END                                      3  ~10     ~11, '%0A'
         16        ECHO                                                     ~10
   11    17    > > JMP                                                      ->4
         18    >   FE_FREE                                                  $7
   15    19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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