DirectoryIterator::seek

(PHP 5 >= 5.3.0)

DirectoryIterator::seek — Seek to a DirectoryIterator item

说明

public void DirectoryIterator::seek ( int $position )

Seek to a given position in the DirectoryIterator.

参数

position: The zero-based numeric position to seek to.

返回值

没有返回值。

范例

Example #1 DirectoryIterator::seek() example

Seek to the fourth item in the directory containing the script. The first two are usually . and ..

  <?php
$iterator  = new  DirectoryIterator ( dirname ( __FILE__ ));
 $iterator -> seek ( 3 );
if ( $iterator -> valid ()) {
    echo  $iterator -> getFilename ();
} else {
    echo  'No file at position 3' ;
}
 ?>

参见

DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
DirectoryIterator::next() - Move forward to next DirectoryIterator item
SeekableIterator::seek() - Seeks to a position