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

Generated using Vulcan Logic Dumper, using php 8.5.0


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