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<?php $string = '23.08.18=&22.08.18=&21.08.18='; parse_str($string, $out); var_export(array_keys($out));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uYhm5
function name:  (null)
number of ops:  12
compiled vars:  !0 = $string, !1 = $out
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, '23.08.18%3D%2622.08.18%3D%2621.08.18%3D'
    3     1        INIT_FCALL                                                   'parse_str'
          2        SEND_VAR                                                     !0
          3        SEND_REF                                                     !1
          4        DO_ICALL                                                     
    4     5        INIT_FCALL                                                   'var_export'
          6        INIT_FCALL                                                   'array_keys'
          7        SEND_VAR                                                     !1
          8        DO_ICALL                                             $4      
          9        SEND_VAR                                                     $4
         10        DO_ICALL                                                     
         11      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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