ftell

(PHP 4, PHP 5, PHP 7)

Returns the current position of the file read/write pointer

int ftell ( resource $handle )

Returns the position of the file pointer referenced by handle.

Parameters:

handle

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:

Returns the position of the file pointer referenced by handle as an integer; i.e., its offset into the file stream.

If an error occurs, returns FALSE.

Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.

Examples:

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); // 11
 
fclose($fp);
 
?>