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<?php $hola = null; var_dump( $hola??'no definido' ); echo "\n"; var_dump( $hola?:'no definido' ); echo "\n"; var_dump( $_GET['parametro']??'no' );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FXEEQ
function name:  (null)
number of ops:  21
compiled vars:  !0 = $hola
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    4     1        INIT_FCALL                                               'var_dump'
          2        COALESCE                                         ~2      !0
          3        QM_ASSIGN                                        ~2      'no+definido'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    6     6        ECHO                                                     '%0A'
    9     7        INIT_FCALL                                               'var_dump'
          8        JMP_SET                                          ~4      !0, ->10
          9        QM_ASSIGN                                        ~4      'no+definido'
         10        SEND_VAL                                                 ~4
         11        DO_ICALL                                                 
   11    12        ECHO                                                     '%0A'
   13    13        INIT_FCALL                                               'var_dump'
         14        FETCH_IS                                         ~6      '_GET'
         15        FETCH_DIM_IS                                     ~7      ~6, 'parametro'
         16        COALESCE                                         ~8      ~7
         17        QM_ASSIGN                                        ~8      'no'
         18        SEND_VAL                                                 ~8
         19        DO_ICALL                                                 
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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