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<?php echo implode( array_keys( array_intersect( array_count_values( str_split('abclkjabc'), ), [1] ) ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qWQju
function name:  (null)
number of ops:  18
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'implode'
    4     1        INIT_FCALL                                               'array_keys'
    5     2        INIT_FCALL                                               'array_intersect'
    6     3        INIT_FCALL                                               'array_count_values'
    7     4        INIT_FCALL                                               'str_split'
          5        SEND_VAL                                                 'abclkjabc'
          6        DO_ICALL                                         $0      
          7        SEND_VAR                                                 $0
    6     8        DO_ICALL                                         $1      
    7     9        SEND_VAR                                                 $1
    9    10        SEND_VAL                                                 <array>
    5    11        DO_ICALL                                         $2      
    9    12        SEND_VAR                                                 $2
    4    13        DO_ICALL                                         $3      
    9    14        SEND_VAR                                                 $3
    3    15        DO_ICALL                                         $4      
    9    16        ECHO                                                     $4
   12    17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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