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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 |
---|---|
18 | /** |
19 | * Filter the display of the permalink for the current post. |
20 | * |
21 | * @since 1.5.0 |
22 | * @since 4.4.0 Added the `$post` parameter. |
23 | * |
24 | * @param string $permalink The permalink for the current post. |
25 | * @param int|WP_Post $post Post ID, WP_Post object, or 0. Default 0. |
26 | */ |
27 | echo esc_url( apply_filters( 'the_permalink', get_permalink( $post ), $post ) ); |
28 | } |
29 |
|
30 | /** |
31 | * Retrieve trailing slash string, if site is set for adding trailing slashes. |
32 | * |
33 | * Conditionally adds a trailing slash if the permalink structure has a trailing |
34 | * slash, strips the trailing slash if not. The string is passed through the |
35 | * 'user_trailingslashit' filter. Will remove trailing slash from string, if |
36 | * site is not set to have them. |