PHP filesize() Function

The PHP filesize() function returns the size for the given file.

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

Syntax

filesize(filename)

Parameters

filename Required. Specify the path to the file.

Return Value

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

Example:

Lets assume that we have a file called test.txt in the current working directory. The example below demonstrates on using this function to get the size of the given file.

<?php
$file = 'test.txt';

//getting the size of the file $file
echo "$file contains: ".filesize($file)." bytes\n";
?>

The output of the above code will be:

test.txt contains: 48 bytes

❮ PHP Filesystem Reference