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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 |
|---|---|
| 573 | * Filter the current feed URL. |
| 574 | * |
| 575 | * @since 3.6.0 |
| 576 | * |
| 577 | * @see set_url_scheme() |
| 578 | * @see wp_unslash() |
| 579 | * |
| 580 | * @param string $feed_link The link for the feed with set URL scheme. |
| 581 | */ |
| 582 | echo esc_url( apply_filters( 'self_link', set_url_scheme( 'http://' . $host['host'] . wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ); |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Return the content type for specified feed type. |
| 587 | * |
| 588 | * @since 2.8.0 |
| 589 | */ |
| 590 | function feed_content_type( $type = '' ) { |
| 591 | if ( empty($type) ) |