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<?php error_reporting(-1); function i(&$variable, $default = null) { if (isset($variable)) { $tmp = $variable; } else { $tmp = $default; } return $tmp; } $array = array(); var_dump(i($array['asd']));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iGAEt
function name:  (null)
number of ops:  12
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'error_reporting'
          1        SEND_VAL                                                 -1
          2        DO_ICALL                                                 
   12     3        ASSIGN                                                   !0, <array>
   13     4        INIT_FCALL                                               'var_dump'
          5        INIT_FCALL                                               'i'
          6        FETCH_DIM_W                                      $3      !0, 'asd'
          7        SEND_REF                                                 $3
          8        DO_FCALL                                      0  $4      
          9        SEND_VAR                                                 $4
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Function i:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iGAEt
function name:  i
number of ops:  9
compiled vars:  !0 = $variable, !1 = $default, !2 = $tmp
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      null
    4     2        ISSET_ISEMPTY_CV                                         !0
          3      > JMPZ                                                     ~3, ->6
    5     4    >   ASSIGN                                                   !2, !0
          5      > JMP                                                      ->7
    7     6    >   ASSIGN                                                   !2, !1
    9     7    > > RETURN                                                   !2
   10     8*     > RETURN                                                   null

End of function i

Generated using Vulcan Logic Dumper, using php 8.0.0


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