Manual:Hooks/RejectParserCacheValue

RejectParserCacheValue
Available from version 1.26.0 (Gerrit change I660679a48c) Return false to reject an otherwise usable cached value from the Parser cache.
Define function:	public static function onRejectParserCacheValue( $parserOutput, $wikiPage, $parserOptions ) { ... }
Attach hook:	In extension.json: { "Hooks": { "RejectParserCacheValue": "MyExtensionHooks::onRejectParserCacheValue" } }
Called from:	File(s): parser/ParserCache.php Function(s): get
Interface:	RejectParserCacheValueHook.php

For more information about attaching hooks, see Manual:Hooks .
For examples of extensions using this hook, see Category:RejectParserCacheValue extensions.

Summary

Warning:

Misuse of this hook can effectively disable the parser cache, with serious consequences for high-traffic installations. Use with extreme care.

This hook allows extensions to reject an otherwise-successful parser cache lookup. The intent is to allow extensions to manage the eviction of archaic HTML output from the cache.

Return true or no return value to continue, or false to reject an otherwise usable cached value from the Parser cache.

Parameters

• $parserOutput: ParserOutput object
• $wikiPage: WikiPage object
• $parserOptions: ParserOptions object