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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 |
|---|---|
| 452 | * |
| 453 | * @since Twenty Thirteen 1.0 |
| 454 | * |
| 455 | * @return string The Link format URL. |
| 456 | */ |
| 457 | function twentythirteen_get_link_url() { |
| 458 | $content = get_the_content(); |
| 459 | $has_url = get_url_in_content( $content ); |
| 460 | |
| 461 | return ( $has_url ) ? $has_url : apply_filters( 'the_permalink', get_permalink() ); |
| 462 | } |
| 463 | |
| 464 | if ( ! function_exists( 'twentythirteen_excerpt_more' ) && ! is_admin() ) : |
| 465 | /** |
| 466 | * Replaces "[...]" (appended to automatically generated excerpts) with ... |
| 467 | * and a Continue reading link. |
| 468 | * |
| 469 | * @since Twenty Thirteen 1.4 |
| 470 | * |