php遍历CSV的方法 php遍历csv的类

2. /**
3. * 遍历csv文件
4. * edit: bbs.it-home.org
5. */
6. class CSVIterator implements Iterator
7. {
8. const ROW_SIZE = 4096;
10. private $filePointer;
11. private $currentElement;
12. private $rowCounter;
13. private $delimiter;
15. public function __construct( $file, $delimiter = ',' )
16. {
17. $this->filePointer = fopen( $file, 'r' );
18. $this->delimiter = $delimiter;
19. }
21. public function rewind()
22. {
23. $this->rowCounter = 0;
24. rewind( $this->filePointer );
25. }
27. public function current()
28. {
29. $this->currentElement = fgetcsv( $this->filePointer, self::ROW_SIZE, $this->delimiter );
30. $this->rowCounter++;
31. return $this->currentElement;
32. }
34. public function key()
35. {
36. return $this->rowCounter;
37. }
39. public function next()
40. {
41. return !feof( $this->filePointer );
42. }
44. public function valid()
45. {
46. if( !$this->next() )
47. {
48. fclose( $this->filePointer );
49. return FALSE;
50. }
51. return TRUE;
52. }
54. } // end class
55. ?>

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