(PHP 4, PHP 5)
ftell — Tells file pointer read/write position
Tells the file pointer read/write position.
The file pointer must be valid, and must point to a file successfully
opened by fopen() or popen().
ftell() gives undefined results for append-only streams
(opened with "a" flag).
Returns the position of the file pointer referenced by
; i.e., its offset into the file stream.
If an error occurs, returns FALSE.
Example #1 ftell() example
<?php// opens a file and read some data$fp = fopen("/etc/passwd", "r");$data = fgets($fp, 12);// where are we ?echo ftell($fp); // 11fclose($fp);?>