clearstatcache() function in PHP

clearstatcache() function is used to clear the file status cache.

PHP caches the information returned by the following functions −

• stat()
• lstat()
• file_exists()
• is_writable()
• is_readable()
• is_executable()
• is_file()
• is_dir()
• filegroup()
• fileowner()
• filesize()
• filetype()
• fileperms()

This is done to provide better performance.

Syntax

void clearstatecache()

Parameters

• NA

Return value

clearstatcache() function does not return any value .

Example

The following is an example to check the file "tmp.txt" and clear the cache.

Online demonstration

<?php
   $file = fopen("tmp.txt", "a+");
   // Clear cache
   clearstatcache();
   echo "Cache cleared!";
?>

Output

Cache cleared!

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