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<?php $str = "@"; echo preg_match('/^\S$/', $str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0S7HF
function name:  (null)
number of ops:  7
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%40'
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5E%5CS%24%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        ECHO                                                     $2
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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