How to calculate the size of a file in php

In PHP, you can use the filesize() function to calculate the size of a file, the syntax format is "filesize(filename)". The filesize() function can return the size of the specified file; if successful, it returns the number of bytes of the file size, if it fails, it returns FALSE.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use filesize () function to calculate the size of a file.

filesize() function returns the size of the specified file.

Syntax

filesize(filename)

• Parameter filename: specifies the file to be checked and cannot be omitted.

Return value: If successful, this function returns the number of bytes of the file size; if failed, it returns FALSE.

Example: Calculate and return the size of the test.txt file

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

Output:

20

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