Php traverses CSV class instances

This article mainly introduces php's CSV traversal class. The example analyzes php's skills for opening, reading, and traversing csv files, which is of great practical value, for more information about how to use php to traverse CSV classes, see the example in this article. Share it with you for your reference. The details are as follows:

<?phpclass 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?>

I hope this article will help you with php programming.