registered_meta_key_exists()

Function: Checks if a meta key is registered.

Source: wp-includes/meta.php:1590

Used by 2 functions | Uses 1 function

unregister_meta_key()

Function: Unregisters a meta key from the list of registered keys.

Source: wp-includes/meta.php:1608

Used by 0 functions | Uses 2 functions

Function: Retrieves a list of registered metadata args for an object type, keyed by their meta keys.

Source: wp-includes/meta.php:1657

Used by 2 functions | Uses 0 functions

Function: Retrieves registered metadata for a specified object.

Source: wp-includes/meta.php:1683

Used by 0 functions | Uses 4 functions

Function: Given a meta query, generates SQL clauses to be appended to a main query.

Source: wp-includes/meta.php:1245

Used by 0 functions | Uses 0 functions

Function: Retrieves the name of the metadata table for the specified object type.

Source: wp-includes/meta.php:1261

Used by 7 functions | Uses 0 functions

Function: Determines whether a meta key is considered protected.

Source: wp-includes/meta.php:1283

Used by 4 functions | Uses 2 functions

Action Hook: Fires immediately before deleting metadata for a post.

Source: wp-includes/meta.php:490

Used by 1 function | Uses 0 functions

Action Hook: Fires immediately after deleting metadata of a specific type.

Source: wp-includes/meta.php:528

Used by 2 functions | Uses 0 functions

Action Hook: Fires immediately after deleting metadata for a post.

Source: wp-includes/meta.php:539

Used by 1 function | Uses 0 functions