(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);
?>
See also:
fopen() -
popen() -
fseek() -
rewind() -
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