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<?php $x = array('9876' => 54321); var_dump($x); var_dump(gettype(key($x)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/898rn
function name:  (null)
number of ops:  12
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    6     4        INIT_FCALL                                               'var_dump'
          5        INIT_FCALL                                               'key'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $3      
          8        GET_TYPE                                         ~4      $3
          9        SEND_VAL                                                 ~4
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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