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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 |
|---|---|
| 110 | /** |
| 111 | * Retrieve the requested data of the author of the current post. |
| 112 | * @link http://codex.wordpress.org/Template_Tags/the_author_meta |
| 113 | * @since 2.8.0 |
| 114 | * @param string $field selects the field of the users record. |
| 115 | * @param int $user_id Optional. User ID. |
| 116 | * @echo string The author's field from the current author's DB object. |
| 117 | */ |
| 118 | function the_author_meta($field = '', $user_id = false) { |
| 119 | echo apply_filters('the_author_' . $field, get_the_author_meta($field, $user_id), $user_id); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Display either author's link or author's name. |
| 124 | * |
| 125 | * If the author has a home page set, echo an HTML link, otherwise just echo the |
| 126 | * author's name. |
| 127 | * |
| 128 | * @link http://codex.wordpress.org/Template_Tags/the_author_link |