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<?php function dummy($s = null) { return $s; } $var = (dummy("test") ?: "empty"); var_dump($var); $var = (dummy() ?: "empty"); var_dump($var);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6XR82
function name:  (null)
number of ops:  18
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'dummy'
          1        SEND_VAL                                                 'test'
          2        DO_FCALL                                      0  $1      
          3        JMP_SET                                          ~2      $1, ->5
          4        QM_ASSIGN                                        ~2      'empty'
          5        ASSIGN                                                   !0, ~2
    9     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
   11     9        INIT_FCALL                                               'dummy'
         10        DO_FCALL                                      0  $5      
         11        JMP_SET                                          ~6      $5, ->13
         12        QM_ASSIGN                                        ~6      'empty'
         13        ASSIGN                                                   !0, ~6
   12    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !0
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Function dummy:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6XR82
function name:  dummy
number of ops:  3
compiled vars:  !0 = $s
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_INIT                                        !0      null
    5     1      > RETURN                                                   !0
    6     2*     > RETURN                                                   null

End of function dummy

Generated using Vulcan Logic Dumper, using php 8.0.0


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