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<?php $search_array = array('first' => null, 'second' => 4); // returns false isset($search_array['first']); // returns true array_key_exists('first', $search_array); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uCHaK
function name:  (null)
number of ops:  6
compiled vars:  !0 = $search_array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    5     1        ISSET_ISEMPTY_DIM_OBJ                         0  ~2      !0, 'first'
          2        FREE                                                     ~2
    8     3        ARRAY_KEY_EXISTS                                 ~3      'first', !0
          4        FREE                                                     ~3
    9     5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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