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<?php $str = '<input type="checkbox" name="jesus">'; echo preg_replace('/<input(\s+)type="checkbox"(\swW+)/', 'hi', $str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pE4Yv
function name:  (null)
number of ops:  8
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                   !0, '%3Cinput+type%3D%22checkbox%22+name%3D%22jesus%22%3E'
    6     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F%3Cinput%28%5Cs%2B%29type%3D%22checkbox%22%28%5CswW%2B%29%2F'
          3        SEND_VAL                                                 'hi'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ECHO                                                     $2
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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