具体如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 <?php class CSVIterator implements Iterator { const ROW_SIZE = 4096; private $filePointer; private $currentElement; private $rowCounter; private $delimiter; public function __construct( $file, $delimiter = ',' ) { $this->filePointer = fopen( $file, 'r' ); $this->delimiter = $delimiter; } public function rewind() { $this->rowCounter = 0; rewind( $this->filePointer ); } public function current() { $this->currentElement = fgetcsv($this->filePointer,self::ROW_SIZE,$this->delimiter); $this->rowCounter++; return $this->currentElement; } public function key() { return $this->rowCounter; } public function next() { return !feof( $this->filePointer ); } public function valid() { if( !$this->next() ) { fclose( $this->filePointer ); return FALSE; } return TRUE; } } // end class ?>