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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 |
|---|---|
| 266 | if ( !empty( $deprecated ) ) |
| 267 | _deprecated_argument( __FUNCTION__, '2.3' ); |
| 268 | |
| 269 | $post = get_post(); |
| 270 | |
| 271 | if ( post_password_required() ) { |
| 272 | return __( 'There is no excerpt because this is a protected post.' ); |
| 273 | } |
| 274 | |
| 275 | return apply_filters( 'get_the_excerpt', $post->post_excerpt ); |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Whether post has excerpt. |
| 280 | * |
| 281 | * @since 2.3.0 |
| 282 | * |
| 283 | * @param int $id Optional. Post ID. |
| 284 | * @return bool |