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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 |
|---|---|
| 208 | * Filters the value of the requested user metadata. |
| 209 | * |
| 210 | * The filter name is dynamic and depends on the $field parameter of the function. |
| 211 | * |
| 212 | * @since 2.8.0 |
| 213 | * |
| 214 | * @param string $author_meta The value of the metadata. |
| 215 | * @param int|false $user_id The user ID. |
| 216 | */ |
| 217 | echo apply_filters( "the_author_{$field}", $author_meta, $user_id ); |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Retrieves either author's link or author's name. |
| 222 | * |
| 223 | * If the author has a home page set, return an HTML link, otherwise just return |
| 224 | * the author's name. |
| 225 | * |
| 226 | * @since 3.0.0 |