ftell
Returns the current position of the file read/write pointer
Description
intfalse ftell(resource $stream)
Parameters
-
stream
-
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).
Return Values
Returns the position of the file pointer referenced by
stream 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
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($fp); // 11
fclose($fp);
?>