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<?php $a = 'true'; var_dump(empty($a['foo'])); var_dump(isset($a['foo'])); $a = 'false'; var_dump(empty($a['foo'])); var_dump(isset($a['foo']));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aFstE
function name:  (null)
number of ops:  19
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'true'
    4     1        INIT_FCALL                                               'var_dump'
          2        ISSET_ISEMPTY_DIM_OBJ                         1  ~2      !0, 'foo'
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
    5     5        INIT_FCALL                                               'var_dump'
          6        ISSET_ISEMPTY_DIM_OBJ                         0  ~4      !0, 'foo'
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
    8     9        ASSIGN                                                   !0, 'false'
    9    10        INIT_FCALL                                               'var_dump'
         11        ISSET_ISEMPTY_DIM_OBJ                         1  ~7      !0, 'foo'
         12        SEND_VAL                                                 ~7
         13        DO_ICALL                                                 
   10    14        INIT_FCALL                                               'var_dump'
         15        ISSET_ISEMPTY_DIM_OBJ                         0  ~9      !0, 'foo'
         16        SEND_VAL                                                 ~9
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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