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<?php $x = array(); $y = array(2, 4); echo var_dump(array_diff($y, array_keys($y)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sfJf1
function name:  (null)
number of ops:  14
compiled vars:  !0 = $x, !1 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'array_diff'
          4        SEND_VAR                                                 !1
          5        INIT_FCALL                                               'array_keys'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                         $4      
          8        SEND_VAR                                                 $4
          9        DO_ICALL                                         $5      
         10        SEND_VAR                                                 $5
         11        DO_ICALL                                         $6      
         12        ECHO                                                     $6
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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