How can the use of .htaccess files impact PHP caching behavior and content freshness on a website?

Using .htaccess files to set caching directives can impact PHP caching behavior by controlling how long certain files are cached by the browser or proxy servers. This can affect the content freshness on a website by determining how often the browser needs to revalidate cached resources with the server. To ensure proper content freshness, it's important to set appropriate caching headers in the .htaccess file for PHP files. 

# Set caching directives for PHP files in .htaccess
<FilesMatch "\.php$">
    Header set Cache-Control "no-cache, no-store, must-revalidate"
    Header set Pragma "no-cache"
    Header set Expires 0
</FilesMatch>

Keywords

.htaccess PHP caching content freshness website impact

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