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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 |
|---|---|
| 148 | * The value of the requested user metadata. |
| 149 | * |
| 150 | * The filter name is dynamic and depends on the $field parameter of the function. |
| 151 | * |
| 152 | * @since 2.8.0 |
| 153 | * |
| 154 | * @param string $author_meta The value of the metadata. |
| 155 | * @param int $user_id The user ID. |
| 156 | */ |
| 157 | echo apply_filters( 'the_author_' . $field, $author_meta, $user_id ); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Retrieve either author's link or author's name. |
| 162 | * |
| 163 | * If the author has a home page set, return an HTML link, otherwise just return the |
| 164 | * author's name. |
| 165 | */ |
| 166 | function get_the_author_link() { |