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<?php $re = "/^[A-Z0-9]{6}$/"; $str = "AAAAA8"; preg_match($re, $str, $matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vEP6W
function name:  (null)
number of ops:  8
compiled vars:  !0 = $re, !1 = $str, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F%5E%5BA-Z0-9%5D%7B6%7D%24%2F'
    3     1        ASSIGN                                                   !1, 'AAAAA8'
    5     2        INIT_FCALL                                               'preg_match'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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