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<?php error_reporting(E_ALL); $array = array(); var_dump(isset($array['foo'])); var_dump(array_key_exists('foo', $array));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/l9Osi
function name:  (null)
number of ops:  13
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'error_reporting'
          1        SEND_VAL                                                 32767
          2        DO_ICALL                                                 
    4     3        ASSIGN                                                   !0, <array>
    6     4        INIT_FCALL                                               'var_dump'
          5        ISSET_ISEMPTY_DIM_OBJ                         0  ~3      !0, 'foo'
          6        SEND_VAL                                                 ~3
          7        DO_ICALL                                                 
    7     8        INIT_FCALL                                               'var_dump'
          9        ARRAY_KEY_EXISTS                                 ~5      'foo', !0
         10        SEND_VAL                                                 ~5
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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