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<?php $arr = array( 'foo' => false, 'bar' => '', 'baz' => null, 'olo' => 0, ); var_dump( isset($arr['foo']), isset($arr['bar']), isset($arr['baz']), isset($arr['olo']) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vDY3K
function name:  (null)
number of ops:  12
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        INIT_FCALL                                               'var_dump'
   11     2        ISSET_ISEMPTY_DIM_OBJ                         0  ~2      !0, 'foo'
          3        SEND_VAL                                                 ~2
   12     4        ISSET_ISEMPTY_DIM_OBJ                         0  ~3      !0, 'bar'
          5        SEND_VAL                                                 ~3
   13     6        ISSET_ISEMPTY_DIM_OBJ                         0  ~4      !0, 'baz'
          7        SEND_VAL                                                 ~4
   14     8        ISSET_ISEMPTY_DIM_OBJ                         0  ~5      !0, 'olo'
          9        SEND_VAL                                                 ~5
         10        DO_ICALL                                                 
   15    11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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