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

Generated using Vulcan Logic Dumper, using php 8.5.0


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