PHP Editor Review - Php Manual Function filesize

PHP Manual

filesize

(PHP 3, PHP 4, PHP 5)

filesize -- Gets file size

Description

int filesize ( string filename )

Returns the size of the file in bytes, or FALSE (and generates an error of level E_WARNING) in case of an error.

Note: Because PHP's integer type is signed and many platforms use 32bit integers, filesize() may return unexpected results for files which are larger than 2GB. For files between 2GB and 4GB in size this can usually be overcome by using sprintf("%u", filesize($file)).

Note: The results of this function are cached. See clearstatcache() for more details.

Tip: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to Appendix M for a listing of which wrappers support stat() family of functionality.

Example 1. filesize() example
<?php // outputs e.g. somefile.txt: 1024 bytes $filename = 'somefile.txt'; echo $filename . ': ' . filesize($filename) . ' bytes'; ?>