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Available from version 1.18.1 (r105512)
Removed in version 1.30.0
Called when extracting thumbnail parameters from a thumbnail file name.
Define function:
public static function onExtractThumbParameters( $thumbname, &$params ) { ... }
Attach hook: In extension.json:
	"Hooks": {
		"ExtractThumbParameters": "MyExtensionHooks::onExtractThumbParameters"
Called from: File(s): ../thumb.php
Function(s): wfExtractThumbParams
Interface: ExtractThumbParametersHook.php

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


  • $thumbname: the base name of the thumbnail file
  • &$params: the currently extracted params (has source name, temp or archived zone)