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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 |
|---|---|
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * Filters the display name of the current post's author. |
| 32 | * |
| 33 | * @since 2.9.0 |
| 34 | * |
| 35 | * @param string|null $display_name The author's display name. |
| 36 | */ |
| 37 | return apply_filters( 'the_author', is_object( $authordata ) ? $authordata->display_name : null ); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Displays the name of the author of the current post. |
| 42 | * |
| 43 | * The behavior of this function is based off of old functionality predating |
| 44 | * get_the_author(). This function is not deprecated, but is designed to echo |
| 45 | * the value from get_the_author() and as an result of any old theme that might |
| 46 | * still use the old behavior will also pass the value from get_the_author(). |