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<?php $s = array ( '$and' => array ( 0 => array ( 'external_identity' => array ( '$elemMatch' => array ( 'type' => 'bpo', 'value' => array ( '$in' => array ( 0 => '34', 1 => '17753', 2 => '7828', 3 => '35060', 4 => '21', ), ), ), ), ), ), ); var_dump(json_encode($s));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IVQFh
function name:  (null)
number of ops:  8
compiled vars:  !0 = $s
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   29     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'json_encode'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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