How can PHP developers prevent caching issues from affecting the performance of their websites?

Caching issues can be prevented by setting appropriate cache-control headers in PHP. By sending headers that instruct the browser not to cache certain resources or to cache them for a specific amount of time, developers can ensure that their websites perform optimally. 

// Prevent caching of a specific resource
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

// Prevent caching of all resources
header("Cache-Control: no-cache, no-store, must-revalidate");
header("Pragma: no-cache");
header("Expires: 0");

Keywords

PHP caching performance website optimization

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