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<?php function handleError($level, $message, $file = '', $line = 0, $context = []) { throw new ErrorException($message, 0, $level, $file, $line); } set_error_handler('handleError'); class A { public function abc(): bool { return false; } } $r = new ReflectionMethod("A", "abc"); (string)$r->getReturnType() ?: "";

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Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7UK9C
function name:  (null)
number of ops:  15
compiled vars:  !0 = $r
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                                   'set_error_handler'
          1        SEND_VAL                                                     'handleError'
          2        DO_ICALL                                                     
   18     3        NEW                                                  $2      'ReflectionMethod'
          4        SEND_VAL_EX                                                  'A'
          5        SEND_VAL_EX                                                  'abc'
          6        DO_FCALL                                          0          
          7        ASSIGN                                                       !0, $2
   19     8        INIT_METHOD_CALL                                             !0, 'getReturnType'
          9        DO_FCALL                                          0  $5      
         10        CAST                                              6  ~6      $5
         11        JMP_SET                                              ~7      ~6, ->13
         12        QM_ASSIGN                                            ~7      ''
         13        FREE                                                         ~7
         14      > RETURN                                                       1

Function handleerror:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 108) Position 1 = -2
filename:       /in/7UK9C
function name:  handleError
number of ops:  14
compiled vars:  !0 = $level, !1 = $message, !2 = $file, !3 = $line, !4 = $context
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        RECV_INIT                                            !2      ''
          3        RECV_INIT                                            !3      0
          4        RECV_INIT                                            !4      <array>
    4     5        NEW                                                  $5      'ErrorException'
          6        SEND_VAR_EX                                                  !1
          7        SEND_VAL_EX                                                  0
          8        SEND_VAR_EX                                                  !0
          9        SEND_VAR_EX                                                  !2
         10        SEND_VAR_EX                                                  !3
         11        DO_FCALL                                          0          
         12      > THROW                                             0          $5
    5    13*     > RETURN                                                       null

End of function handleerror

Class A:
Function abc:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7UK9C
function name:  abc
number of ops:  3
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   14     0  E > > RETURN                                                       <false>
   15     1*       VERIFY_RETURN_TYPE                                           
          2*     > RETURN                                                       null

End of function abc

End of class A.

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