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<?php // warning: var_dump(preg_match('not a regex', '')); // no warning: var_dump(@preg_match('also not a regex', ''));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1SZcm
function name:  (null)
number of ops:  17
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 'not+a+regex'
          3        SEND_VAL                                                 ''
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    7     7        INIT_FCALL                                               'var_dump'
          8        BEGIN_SILENCE                                    ~2      
          9        INIT_FCALL                                               'preg_match'
         10        SEND_VAL                                                 'also+not+a+regex'
         11        SEND_VAL                                                 ''
         12        DO_ICALL                                         $3      
         13        END_SILENCE                                              ~2
         14        SEND_VAR                                                 $3
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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