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<?php function f1(&$v) {} function f2() {$a = array(1,2,3); return $a; } // Both are Fatal error: Only variables can be passed by reference f1((array)f2()); f1(array(f2()));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ob1o2
function name:  (null)
number of ops:  13
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'f1'
          1        INIT_FCALL                                               'f2'
          2        DO_FCALL                                      0  $0      
          3        CAST                                          7  ~1      $0
          4        SEND_VAL_EX                                              ~1
          5        DO_FCALL                                      0          
    7     6        INIT_FCALL                                               'f1'
          7        INIT_FCALL                                               'f2'
          8        DO_FCALL                                      0  $3      
          9        INIT_ARRAY                                       ~4      $3
         10        SEND_VAL_EX                                              ~4
         11        DO_FCALL                                      0          
         12      > RETURN                                                   1

Function f1:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ob1o2
function name:  f1
number of ops:  2
compiled vars:  !0 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function f1

Function f2:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ob1o2
function name:  f2
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
          1      > RETURN                                                   !0
          2*     > RETURN                                                   null

End of function f2

Generated using Vulcan Logic Dumper, using php 8.0.0


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