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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 wp_{$post->post_type}_revisions_to_keep

This database has information for all major versions from WP 1.2.1 through 6.2.

Version File Line Type
5.8 wp-includes/revision.php 582 View in context filter
5.9 wp-includes/revision.php 621 View in context filter
6.0 wp-includes/revision.php 621 View in context filter
6.1 wp-includes/revision.php 683 View in context filter
6.2 wp-includes/revision.php 698 View in context filter

Related Hooks

We find related hooks using word stems. wp_{$post->post_type}_revisions_to_keep has 6 significant word stem(s): post, post, type, revisions, to, keep. Note that some of the hooks below may not appear in all versions of WP.