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<?php $values = [1,2,3,1,6,1,23,2]; $result = array_keys(array_intersect(array_count_values($values), [1])); var_dump($result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cHU5E
function name:  (null)
number of ops:  16
compiled vars:  !0 = $values, !1 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'array_keys'
          2        INIT_FCALL                                               'array_intersect'
          3        INIT_FCALL                                               'array_count_values'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $3      
          6        SEND_VAR                                                 $3
          7        SEND_VAL                                                 <array>
          8        DO_ICALL                                         $4      
          9        SEND_VAR                                                 $4
         10        DO_ICALL                                         $5      
         11        ASSIGN                                                   !1, $5
    7    12        INIT_FCALL                                               'var_dump'
         13        SEND_VAR                                                 !1
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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