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Important warning about variable hooks

Some hooks have variables in their names. For example, pre_${taxonomy}_$field and admin_head- both have variable names. In general, any hook that ends (or begins) with - or _, or contains a $, has a variable name. Since the syntax with which these variables are defined may change from version to version, this page may think that a hook is deprecated (or new) even if it is not. You can usually catch this sort of thing by comparing this hook to the list of "related hooks" below.

WordPress version history for update_{$meta_type}_metadata_cache

This database has information for all major versions from WP 1.2.1 through 6.0.

Version File Line Type
5.0 wp-includes/meta.php 879 View in context filter
5.1 wp-includes/meta.php 909 View in context filter
5.2 wp-includes/meta.php 911 View in context filter
5.3 wp-includes/meta.php 917 View in context filter
5.4 wp-includes/meta.php 923 View in context filter
5.5 wp-includes/meta.php 1035 View in context filter
5.6 wp-includes/meta.php 1035 View in context filter
5.7 wp-includes/meta.php 1035 View in context filter
5.8 wp-includes/meta.php 1042 View in context filter
5.9 wp-includes/meta.php 1147 View in context filter
6.0 wp-includes/meta.php 1146 View in context filter

Related Hooks

We find related hooks using word stems. update_{$meta_type}_metadata_cache has 5 significant word stem(s): update, meta, type, metadata, cache. Note that some of the hooks below may not appear in all versions of WP.