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<?php function foo($key) { $a = ['a']; return $a[$key] ?? 'nope'; } var_dump(foo(0), foo(1));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Rm7HU
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'foo'
          2        SEND_VAL                                                 0
          3        DO_FCALL                                      0  $0      
          4        SEND_VAR                                                 $0
          5        INIT_FCALL                                               'foo'
          6        SEND_VAL                                                 1
          7        DO_FCALL                                      0  $1      
          8        SEND_VAR                                                 $1
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Rm7HU
function name:  foo
number of ops:  7
compiled vars:  !0 = $key, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    5     1        ASSIGN                                                   !1, <array>
    7     2        FETCH_DIM_IS                                     ~3      !1, !0
          3        COALESCE                                         ~4      ~3
          4        QM_ASSIGN                                        ~4      'nope'
          5      > RETURN                                                   ~4
    8     6*     > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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