How to use php filesize function

php filesize function is used to return the size of the specified file. Its syntax is filesize(filename). If successful, it returns the number of bytes of the file size. If it fails, false is returned and an E_WARNING level error is generated.

#How to use the php filesize function?

Definition and usage

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

If successful, return the number of bytes of the file size. On failure, returns false and generates an E_WARNING level error.

Syntax

filesize(filename)

Parameters

filename required. Specifies the documents to be checked.

Tips and comments

Tips: The results of this function will be cached. Please use clearstatcache() to clear the cache.

Example

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

Output:

20

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