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<?php $str = "Foo *Bar\* asdf* Baz"; var_dump(preg_replace_callback('{\*([\\\*]*[^\*]+)\*?}', function($matches) { return "<b>{$matches[1]}</b>"; }, $str));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TPdc2
function name:  (null)
number of ops:  11
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Foo+%2ABar%5C%2A+asdf%2A+Baz'
    5     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'preg_replace_callback'
          3        SEND_VAL                                                 '%7B%5C%2A%28%5B%5C%5C%2A%5D%2A%5B%5E%5C%2A%5D%2B%29%5C%2A%3F%7D'
          4        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FTPdc2%3A5%240'
    7     5        SEND_VAL                                                 ~2
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $3      
          8        SEND_VAR                                                 $3
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FTPdc2%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TPdc2
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
    6     1        ROPE_INIT                                     3  ~3      '%3Cb%3E'
          2        FETCH_DIM_R                                      ~1      !0, 1
          3        ROPE_ADD                                      1  ~3      ~3, ~1
          4        ROPE_END                                      2  ~2      ~3, '%3C%2Fb%3E'
          5      > RETURN                                                   ~2
    7     6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FTPdc2%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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