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<?php $pattern = '/^[^\d\r\n]*\b(\d+)([admno]\d+)?/'; $strings = [ "Some string 12345a1% some other string.", "Somet string 23456b2! some other string" ]; foreach ($strings as $s) { preg_match($pattern, $s, $match); var_dump($match); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 13
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/k1QOI
function name:  (null)
number of ops:  15
compiled vars:  !0 = $pattern, !1 = $strings, !2 = $s, !3 = $match
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '%2F%5E%5B%5E%5Cd%5Cr%5Cn%5D%2A%5Cb%28%5Cd%2B%29%28%5Badmno%5D%5Cd%2B%29%3F%2F'
    4     1        ASSIGN                                                       !1, <array>
    9     2      > FE_RESET_R                                           $6      !1, ->13
          3    > > FE_FETCH_R                                                   $6, !2, ->13
   10     4    >   INIT_FCALL                                                   'preg_match'
          5        SEND_VAR                                                     !0
          6        SEND_VAR                                                     !2
          7        SEND_REF                                                     !3
          8        DO_ICALL                                                     
   11     9        INIT_FCALL                                                   'var_dump'
         10        SEND_VAR                                                     !3
         11        DO_ICALL                                                     
    9    12      > JMP                                                          ->3
         13    >   FE_FREE                                                      $6
   12    14      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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