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<?php class DoctorFilter extends FilterIterator { public function accept(): bool { $obj = $this->getInnerIterator()->current(); return is_string($obj) && str_starts_with($obj, 'Dr.'); } } $people = [ 'Dr. Jekyll', 'Mr. Hyde', // This item will be removed 'Dr. Frankenstein', ]; foreach (new DoctorFilter(new ArrayIterator($people)) as $item) { echo $item.PHP_EOL; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 8, Position 2 = 12
Branch analysis from position: 8
2 jumps found. (Code = 78) Position 1 = 9, Position 2 = 12
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/ieTAP
function name:  (null)
number of ops:  14
compiled vars:  !0 = $people, !1 = $item
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   13     0  E >   ASSIGN                                                       !0, <array>
   19     1        NEW                                                  $3      'DoctorFilter'
          2        NEW                                                  $4      'ArrayIterator'
          3        SEND_VAR_EX                                                  !0
          4        DO_FCALL                                          0          
          5        SEND_VAR_NO_REF_EX                                           $4
          6        DO_FCALL                                          0          
          7      > FE_RESET_R                                           $7      $3, ->12
          8    > > FE_FETCH_R                                                   $7, !1, ->12
   20     9    >   CONCAT                                               ~8      !1, '%0A'
         10        ECHO                                                         ~8
   19    11      > JMP                                                          ->8
         12    >   FE_FREE                                                      $7
   21    13      > RETURN                                                       1

Class DoctorFilter:
Function accept:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/ieTAP
function name:  accept
number of ops:  13
compiled vars:  !0 = $obj
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    7     0  E >   INIT_METHOD_CALL                                             'getInnerIterator'
          1        DO_FCALL                                          0  $1      
          2        INIT_METHOD_CALL                                             $1, 'current'
          3        DO_FCALL                                          0  $2      
          4        ASSIGN                                                       !0, $2
    9     5        TYPE_CHECK                                       64  ~4      !0
          6      > JMPZ_EX                                              ~4      ~4, ->9
          7    >   FRAMELESS_ICALL_2                str_starts_with      ~5      !0, 'Dr.'
          8        BOOL                                                 ~4      ~5
          9    >   VERIFY_RETURN_TYPE                                           ~4
         10      > RETURN                                                       ~4
   10    11*       VERIFY_RETURN_TYPE                                           
         12*     > RETURN                                                       null

End of function accept

End of class DoctorFilter.

Generated using Vulcan Logic Dumper, using php 8.5.0


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