(PHP 5 >= 5.1.0)
SplFileObject::ftell — Return current file position
Returns the position of the file pointer which represents the current offset in the file stream.
この関数にはパラメータはありません。
Returns the position of the file pointer as an integer, or FALSE on error.
例1 SplFileObject::ftell example
<?php
$file = new SplFileObject("/etc/passwd");
// Read first line
$data = $file->fgets();
// Where are we?
echo $file->ftell();
?>