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<?php $arr = [1,2,3]; var_dump(key(array_values($arr))); var_dump(end(array_values($arr)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/d9QYP
function name:  (null)
number of ops:  20
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'key'
          3        INIT_FCALL                                               'array_values'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                         $3      
          8        SEND_VAR                                                 $3
          9        DO_ICALL                                                 
    4    10        INIT_FCALL                                               'var_dump'
         11        INIT_FCALL                                               'end'
         12        INIT_FCALL                                               'array_values'
         13        SEND_VAR                                                 !0
         14        DO_ICALL                                         $5      
         15        SEND_VAR_NO_REF                               0          $5
         16        DO_ICALL                                         $6      
         17        SEND_VAR                                                 $6
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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