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WordPress hook directory
thumbnail_filename

WordPress version history for thumbnail_filename

This database has information for all major versions from WP 1.2.1 through 4.4.

Version File Line Type
2.0 wp-admin/admin-functions.php 746 View hook in source filter
2.0.11 wp-admin/admin-functions.php 785 View hook in source filter
2.1 wp-admin/admin-functions.php 2188 View hook in source filter
2.2 wp-admin/admin-functions.php 2277 View hook in source filter
2.3 wp-admin/includes/image.php 72 View hook in source filter

Important warning!

This hook does not occur in the most recent version of WordPress (4.4). Do not use it. It is deprecated. You should look at the list of "related hooks" below to see if you can figure out what replaced it.

Related Hooks

We find related hooks using word stems. thumbnail_filename has 2 significant word stem(s): thumbnail, filename. Note that some of the hooks below may not appear in all versions of WP.