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<?php $s = '<h2><strong>Automatic Writing</strong> <strong>– A Conduit For An Entity From Another World?</strong></h2>'; echo preg_replace_callback('~<h([1-6])>.*?</h\1>~is', function($m) { return preg_replace('~</?strong>~i', '', $m[0]); } , $s);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rqUmp
function name:  (null)
number of ops:  9
compiled vars:  !0 = $s
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '%3Ch2%3E%3Cstrong%3EAutomatic+Writing%3C%2Fstrong%3E+%3Cstrong%3E%E2%80%93+A+Conduit+For+An+Entity+From+Another+World%3F%3C%2Fstrong%3E%3C%2Fh2%3E'
    4     1        INIT_FCALL                                                   'preg_replace_callback'
          2        SEND_VAL                                                     '%7E%3Ch%28%5B1-6%5D%29%3E.%2A%3F%3C%2Fh%5C1%3E%7Eis'
          3        DECLARE_LAMBDA_FUNCTION                              ~2      [0]
    5     4        SEND_VAL                                                     ~2
    6     5        SEND_VAR                                                     !0
    4     6        DO_ICALL                                             $3      
    6     7        ECHO                                                         $3
          8      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rqUmp
function name:  {closure:/in/rqUmp:4}
number of ops:  6
compiled vars:  !0 = $m
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
    5     1        FETCH_DIM_R                                          ~1      !0, 0
          2        FRAMELESS_ICALL_3                preg_replace        ~2      '%7E%3C%2F%3Fstrong%3E%7Ei', ''
          3        OP_DATA                                                      ~1
          4      > RETURN                                                       ~2
          5*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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