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<?php $data = array( "28000000000000003" => 'ABC', "28000000000000001" => 'PQR' ); echo "1.".in_array("28000000000000003",array_keys($data),true) , PHP_EOL; echo "2.".in_array("28000000000000003",array_keys($data)) , PHP_EOL; echo "3.".in_array("28000000000000003",array("28000000000000003","28000000000000001"),true) , PHP_EOL; echo "4.".in_array("28000000000000003",array("28000000000000003","28000000000000001")) , PHP_EOL; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UnRZJ
function name:  (null)
number of ops:  34
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1        INIT_FCALL                                               'in_array'
          2        SEND_VAL                                                 '28000000000000003'
          3        INIT_FCALL                                               'array_keys'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        SEND_VAL                                                 <true>
          8        DO_ICALL                                         $3      
          9        CONCAT                                           ~4      '1.', $3
         10        ECHO                                                     ~4
         11        ECHO                                                     '%0A'
   11    12        INIT_FCALL                                               'in_array'
         13        SEND_VAL                                                 '28000000000000003'
         14        INIT_FCALL                                               'array_keys'
         15        SEND_VAR                                                 !0
         16        DO_ICALL                                         $5      
         17        SEND_VAR                                                 $5
         18        DO_ICALL                                         $6      
         19        CONCAT                                           ~7      '2.', $6
         20        ECHO                                                     ~7
         21        ECHO                                                     '%0A'
   13    22        IN_ARRAY                                         ~8      '28000000000000003', <array>
         23        CONCAT                                           ~9      '3.', ~8
         24        ECHO                                                     ~9
         25        ECHO                                                     '%0A'
   15    26        INIT_FCALL                                               'in_array'
         27        SEND_VAL                                                 '28000000000000003'
         28        SEND_VAL                                                 <array>
         29        DO_ICALL                                         $10     
         30        CONCAT                                           ~11     '4.', $10
         31        ECHO                                                     ~11
         32        ECHO                                                     '%0A'
   16    33      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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