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<?php $array = [6 => 'a', -1 => 'b', 4 => 'c']; var_export( array_last($array) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1MEXH
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>
    5     1        INIT_FCALL                                               'var_export'
    6     2        INIT_FCALL_BY_NAME                                       'array_last'
          3        SEND_VAR_EX                                              !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
    5     6        DO_ICALL                                                 
    7     7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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