How can potential caching issues affect the execution of PHP code?

Potential caching issues can affect the execution of PHP code by serving outdated content to users. This can lead to inconsistencies in data display and functionality. To solve this issue, developers can implement cache control headers in their PHP code to control how content is cached by browsers and servers. 

// Set cache control headers to prevent caching of PHP files
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Pragma: no-cache"); // HTTP/1.0
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past

Keywords

caching PHP code execution performance optimization

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