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<?php $pattern = '/^\d$/'; $subject=10231234; echo preg_match($pattern, $subject);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/skkhh
function name:  (null)
number of ops:  8
compiled vars:  !0 = $pattern, !1 = $subject
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F%5E%5Cd%24%2F'
    3     1        ASSIGN                                                   !1, 10231234
    4     2        INIT_FCALL                                               'preg_match'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $4      
          6        ECHO                                                     $4
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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