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<?php class FooNoMoreException extends Exception {} class Foo { protected $count = 500; public function step() { if (!$this->count) { throw new FooNoMoreException('No more steps to take.'); } $this->count--; } } $f = new Foo; try { while ($f->step() || true) {} } catch (FooNoMoreException $e) {} $d = new Foo; while (1) { try { $f->step(); } catch (FooNoMoreException $e) { break; } } var_dump($f); var_dump($g);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
2 jumps found. (Code = 47) Position 1 = 7, Position 2 = 8
Branch analysis from position: 7
2 jumps found. (Code = 44) Position 1 = 9, Position 2 = 4
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
2 jumps found. (Code = 44) Position 1 = 21, Position 2 = 15
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
Branch analysis from position: 4
Branch analysis from position: 8
Found catch point at position: 10
Branch analysis from position: 10
2 jumps found. (Code = 107) Position 1 = 11, Position 2 = -2
Branch analysis from position: 11
Found catch point at position: 18
Branch analysis from position: 18
2 jumps found. (Code = 107) Position 1 = 19, Position 2 = -2
Branch analysis from position: 19
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
filename:       /in/OHudl
function name:  (null)
number of ops:  28
compiled vars:  !0 = $f, !1 = $e, !2 = $d, !3 = $g
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   NEW                                              $4      'Foo'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $4
   18     3      > JMP                                                      ->4
          4    >   INIT_METHOD_CALL                                         !0, 'step'
          5        DO_FCALL                                      0  $7      
          6      > JMPNZ_EX                                         ~8      $7, ->8
          7    >   BOOL                                             ~8      <true>
          8    > > JMPNZ                                                    ~8, ->4
          9    > > JMP                                                      ->11
   19    10  E > > CATCH                                       last         'FooNoMoreException'
   23    11    >   NEW                                              $9      'Foo'
         12        DO_FCALL                                      0          
         13        ASSIGN                                                   !2, $9
   24    14      > JMP                                                      ->20
   26    15    >   INIT_METHOD_CALL                                         !0, 'step'
         16        DO_FCALL                                      0          
         17      > JMP                                                      ->20
   28    18  E > > CATCH                                       last         'FooNoMoreException'
   29    19    > > JMP                                                      ->21
   24    20    > > JMPNZ                                                    1, ->15
   33    21    >   INIT_FCALL                                               'var_dump'
         22        SEND_VAR                                                 !0
         23        DO_ICALL                                                 
   34    24        INIT_FCALL                                               'var_dump'
         25        SEND_VAR                                                 !3
         26        DO_ICALL                                                 
         27      > RETURN                                                   1

Class FooNoMoreException: [no user functions]
Class Foo:
Function step:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 7
Branch analysis from position: 3
1 jumps found. (Code = 108) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OHudl
function name:  step
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   FETCH_OBJ_R                                      ~0      'count'
          1        BOOL_NOT                                         ~1      ~0
          2      > JMPZ                                                     ~1, ->7
    9     3    >   NEW                                              $2      'FooNoMoreException'
          4        SEND_VAL_EX                                              'No+more+steps+to+take.'
          5        DO_FCALL                                      0          
          6      > THROW                                         0          $2
   11     7    >   PRE_DEC_OBJ                                              'count'
   12     8      > RETURN                                                   null

End of function step

End of class Foo.

Generated using Vulcan Logic Dumper, using php 8.0.0


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