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<?php $str = preg_replace('/(\w)(.)?/e', "strtoupper('$1').strtolower('$2')", 'test example.Hello World'); echo $str; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HlpER
function name:  (null)
number of ops:  8
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_replace'
          1        SEND_VAL                                                 '%2F%28%5Cw%29%28.%29%3F%2Fe'
          2        SEND_VAL                                                 'strtoupper%28%27%241%27%29.strtolower%28%27%242%27%29'
          3        SEND_VAL                                                 'test+example.Hello+World'
          4        DO_ICALL                                         $1      
          5        ASSIGN                                                   !0, $1
    3     6        ECHO                                                     !0
    4     7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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