The filesize Function

The filesize function returns the file size in bytes. The function accepts the file path as a parameter. If the file does not exist, the function will return false and generate a warning.

Syntax

filesize(filename);

Example

Get the size of the file 'test.txt':

<?php
	$res = filesize('test.txt');
	echo $res;
?>

Code execution result (for example):

1024

Example

Check if the file exists before getting its size:

<?php
	$filename = 'test.txt';
	
	if (file_exists($filename)) {
		$res = filesize($filename);
		echo "File size: " . $res . " bytes";
	} else {
		echo "File not found";
	}
?>

Code execution result:

'File size: 1024 bytes'

Example

Get the file size and convert it to kilobytes:

<?php
	$res = filesize('test.txt') / 1024;
	echo round($res, 2) . " KB";
?>

Code execution result:

'1.00 KB'

The filesize Function

Syntax

Example

Example

Example

See Also