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<?php // (1) namespace X; // (2) function f(array $o) { return [&$o['v']]; } $v = ['z', 'a']; $a = ['v' => $v]; $args = f($a); call_user_func_array('sort', $args); // Additionally, if the above 2 lines are replaced by the following // line, the bug never appears. //call_user_func_array('sort', f($a));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QE9Vf
function name:  (null)
number of ops:  12
compiled vars:  !0 = $v, !1 = $a, !2 = $args
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   ASSIGN                                                   !0, <array>
   12     1        INIT_ARRAY                                       ~4      !0, 'v'
          2        ASSIGN                                                   !1, ~4
   14     3        INIT_NS_FCALL_BY_NAME                                    'X%5Cf'
          4        SEND_VAR_EX                                              !1
          5        DO_FCALL                                      0  $6      
          6        ASSIGN                                                   !2, $6
   15     7        INIT_NS_FCALL_BY_NAME                                    'X%5Ccall_user_func_array'
          8        SEND_VAL_EX                                              'sort'
          9        SEND_VAR_EX                                              !2
         10        DO_FCALL                                      0          
   18    11      > RETURN                                                   1

Function x%5Cf:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QE9Vf
function name:  X\f
number of ops:  5
compiled vars:  !0 = $o
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
    8     1        FETCH_DIM_W                                      $1      !0, 'v'
          2        INIT_ARRAY                                       ~2      $1
          3      > RETURN                                                   ~2
    9     4*     > RETURN                                                   null

End of function x%5Cf

Generated using Vulcan Logic Dumper, using php 8.0.0


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