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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 |
|---|---|
| 150 | * |
| 151 | * The filter is only applied on the front end. |
| 152 | * |
| 153 | * @since 2.8.0 |
| 154 | * |
| 155 | * @param string $prepend Text displayed before the post title. |
| 156 | * Default 'Private: %s'. |
| 157 | * @param WP_Post $post Current post object. |
| 158 | */ |
| 159 | $private_title_format = apply_filters( 'private_title_format', $prepend, $post ); |
| 160 | |
| 161 | $post_title = sprintf( $private_title_format, $post_title ); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Filters the post title. |
| 167 | * |
| 168 | * @since 0.71 |