ftell
(PHP 4, PHP 5, PHP 7, PHP 8)
ftell — Returns the current position of the file read/write pointer
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);
?>
See Also
- fopen() - Opens file or URL
- popen() - Opens process file pointer
- fseek() - Seeks on a file pointer
- rewind() - Rewind the position of a file pointer
fsync
Filesystem Functions