PHP filesize() Function

Return the file size for "test.txt":

<?php
echo filesize("test.txt");
?>

Definition and Usage

The filesize() function returns the size of a file.

Note: The result of this function is cached. Use clearstatcache() to clear the cache.

filesize( filename)

Parameter	Description
filename	Required. Specifies the path to the file to check

Return Value:	The file size in bytes on success, FALSE on failure
PHP Version:	4.0+