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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.
This database has information for all major versions from WP 1.2.1 through 6.2.
| Version | File | Line | Type | |
|---|---|---|---|---|
| 3.1 | wp-includes/meta.php | 193 | View in context | filter |
| 3.2 | wp-includes/meta.php | 195 | View in context | filter |
| 3.3 | wp-includes/meta.php | 202 | View in context | filter |
| 3.4 | wp-includes/meta.php | 202 | View in context | filter |
| 3.5 | wp-includes/meta.php | 202 | View in context | filter |
| 3.6 | wp-includes/meta.php | 202 | View in context | filter |
| 3.7 | wp-includes/meta.php | 204 | View in context | filter |
| 3.8 | wp-includes/meta.php | 204 | View in context | filter |
| 3.9 | wp-includes/meta.php | 318 | View in context | filter |
| 4.0 | wp-includes/meta.php | 333 | View in context | filter |
| 4.1 | wp-includes/meta.php | 347 | View in context | filter |
| 4.2 | wp-includes/meta.php | 347 | View in context | filter |
| 4.3 | wp-includes/meta.php | 351 | View in context | filter |
| 4.4 | wp-includes/meta.php | 350 | View in context | filter |
| 4.5 | wp-includes/meta.php | 347 | View in context | filter |
| 4.6 | wp-includes/meta.php | 347 | View in context | filter |
| 4.7 | wp-includes/meta.php | 347 | View in context | filter |
| 4.8 | wp-includes/meta.php | 347 | View in context | filter |
| 4.9 | wp-includes/meta.php | 347 | View in context | filter |
| 5.0 | wp-includes/meta.php | 351 | View in context | filter |
| 5.1 | wp-includes/meta.php | 368 | View in context | filter |
| 5.2 | wp-includes/meta.php | 370 | View in context | filter |
| 5.3 | wp-includes/meta.php | 370 | View in context | filter |
| 5.4 | wp-includes/meta.php | 371 | View in context | filter |
| 5.5 | wp-includes/meta.php | 376 | View in context | filter |
| 5.6 | wp-includes/meta.php | 376 | View in context | filter |
| 5.7 | wp-includes/meta.php | 376 | View in context | filter |
| 5.8 | wp-includes/meta.php | 376 | View in context | filter |
| 5.9 | wp-includes/meta.php | 425 | View in context | filter |
| 6.0 | wp-includes/meta.php | 425 | View in context | filter |
| 6.1 | wp-includes/meta.php | 425 | View in context | filter |
| 6.2 | wp-includes/meta.php | 426 | View in context | filter |
We find related hooks using word stems. delete_{$meta_type}_metadata has 4 significant word stem(s): delete, meta, type, metadata. Note that some of the hooks below may not appear in all versions of WP.
