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<?php function ReturnArray() { return array(); } ${!${!1}=ReturnArray()} = 'foo'; var_export($GLOBALS); // '' => an empty array // 1 => 'foo'
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/SOqT1
function name:  (null)
number of ops:  12
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                                   'returnarray'
          1        DO_FCALL                                          0  $1      
          2        FETCH_W                          local               $0      ''
          3        ASSIGN                                               ~2      $0, $1
          4        BOOL_NOT                                             ~3      ~2
          5        FETCH_W                          local               $4      ~3
          6        ASSIGN                                                       $4, 'foo'
    8     7        INIT_FCALL                                                   'var_export'
          8        FETCH_GLOBALS                                        ~6      
          9        SEND_VAL                                                     ~6
         10        DO_ICALL                                                     
   10    11      > RETURN                                                       1

Function returnarray:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/SOqT1
function name:  ReturnArray
number of ops:  2
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E > > RETURN                                                       <array>
    5     1*     > RETURN                                                       null

End of function returnarray

Generated using Vulcan Logic Dumper, using php 8.5.0


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