3v4l.org

run code in 500+ PHP versions simultaneously
<?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 8.5.0


preferences:
158.54 ms | 1974 KiB | 17 Q