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<?php function initialiseStr($var) { return isset($var) ? $var : ''; } $foo = initialiseStr($foo); var_dump($foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Nvi2o
function name:  (null)
number of ops:  8
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'initialisestr'
          1        SEND_VAR                                                 !0
          2        DO_FCALL                                      0  $1      
          3        ASSIGN                                                   !0, $1
    9     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function initialisestr:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Nvi2o
function name:  initialiseStr
number of ops:  8
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    5     1        ISSET_ISEMPTY_CV                                         !0
          2      > JMPZ                                                     ~1, ->5
          3    >   QM_ASSIGN                                        ~2      !0
          4      > JMP                                                      ->6
          5    >   QM_ASSIGN                                        ~2      ''
          6    > > RETURN                                                   ~2
    6     7*     > RETURN                                                   null

End of function initialisestr

Generated using Vulcan Logic Dumper, using php 8.0.0


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