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<?php $a = array('1','2','3','4'); $b = array('4','5','6','7'); $c = array_merge($a,$b); var_dump(array_unique($c)); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WN7cA
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'array_merge'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $5      
          6        ASSIGN                                                   !2, $5
    7     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'array_unique'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                         $7      
         11        SEND_VAR                                                 $7
         12        DO_ICALL                                                 
    8    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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