What are the potential issues with caching when implementing URL redirection in PHP?

Potential issues with caching when implementing URL redirection in PHP include the redirection not being immediately recognized by the client due to cached responses. To solve this, you can add cache control headers to ensure that the redirection response is not cached by the client. 

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

// Perform URL redirection
header("Location: https://example.com/new-page.php");
exit();

Keywords

caching URL redirection PHP issues implementation

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