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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 |
|---|---|
| 212 | * @since Twenty Fifteen 1.0 |
| 213 | * |
| 214 | * @see get_url_in_content() |
| 215 | * |
| 216 | * @return string The Link format URL. |
| 217 | */ |
| 218 | function twentyfifteen_get_link_url() { |
| 219 | $has_url = get_url_in_content( get_the_content() ); |
| 220 | |
| 221 | return $has_url ? $has_url : apply_filters( 'the_permalink', get_permalink() ); |
| 222 | } |
| 223 | endif; |
| 224 | |
| 225 | if ( ! function_exists( 'twentyfifteen_excerpt_more' ) && ! is_admin() ) : |
| 226 | /** |
| 227 | * Replaces "[...]" (appended to automatically generated excerpts) with ... and a 'Continue reading' link. |
| 228 | * |
| 229 | * @since Twenty Fifteen 1.0 |
| 230 | * |