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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 4582 | * Fires when a deprecated hook is called. |
| 4583 | * |
| 4584 | * @since 4.6.0 |
| 4585 | * |
| 4586 | * @param string $hook The hook that was called. |
| 4587 | * @param string $replacement The hook that should be used as a replacement. |
| 4588 | * @param string $version The version of WordPress that deprecated the argument used. |
| 4589 | * @param string $message A message regarding the change. |
| 4590 | */ |
| 4591 | do_action( 'deprecated_hook_run', $hook, $replacement, $version, $message ); |
| 4592 | |
| 4593 | /** |
| 4594 | * Filters whether to trigger deprecated hook errors. |
| 4595 | * |
| 4596 | * @since 4.6.0 |
| 4597 | * |
| 4598 | * @param bool $trigger Whether to trigger deprecated hook errors. Requires |
| 4599 | * `WP_DEBUG` to be defined true. |
| 4600 | */ |