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<?php $x = ["a" => 1]; mb_convert_variables("UTF-8", "ISO-8859-15", $x); var_dump($x);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fZH3m
function name:  (null)
number of ops:  10
compiled vars:  !0 = $x
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                       !0, <array>
    5     1        INIT_FCALL                                                   'mb_convert_variables'
          2        SEND_VAL                                                     'UTF-8'
          3        SEND_VAL                                                     'ISO-8859-15'
          4        SEND_REF                                                     !0
          5        DO_ICALL                                                     
    6     6        INIT_FCALL                                                   'var_dump'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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