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<? $x = 'bobWEhhƠĶ'; echo preg_match('[0-9a-zA-Z]', $x); echo preg_match('~[0-9a-zA-Z]~', $x); echo preg_match('~[0-9a-zA-Z]+~', $x); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/t2drR
function name:  (null)
number of ops:  17
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'bobWEhh%E2%88%86%E2%80%A0%C6%92%E2%88%82'
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%5B0-9a-zA-Z%5D'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        ECHO                                                     $2
    7     6        INIT_FCALL                                               'preg_match'
          7        SEND_VAL                                                 '%7E%5B0-9a-zA-Z%5D%7E'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $3      
         10        ECHO                                                     $3
    9    11        INIT_FCALL                                               'preg_match'
         12        SEND_VAL                                                 '%7E%5B0-9a-zA-Z%5D%2B%7E'
         13        SEND_VAR                                                 !0
         14        DO_ICALL                                         $4      
         15        ECHO                                                     $4
   10    16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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