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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 |
|---|---|
| 34 | function user_trailingslashit($string, $type_of_url = '') { |
| 35 | global $wp_rewrite; |
| 36 | if ( $wp_rewrite->use_trailing_slashes ) |
| 37 | $string = trailingslashit($string); |
| 38 | else |
| 39 | $string = untrailingslashit($string); |
| 40 | |
| 41 | // Note that $type_of_url can be one of following: |
| 42 | // single, single_trackback, single_feed, single_paged, feed, category, page, year, month, day, paged, post_type_archive |
| 43 | $string = apply_filters('user_trailingslashit', $string, $type_of_url); |
| 44 | return $string; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Display permalink anchor for current post. |
| 49 | * |
| 50 | * The permalink mode title will use the post title for the 'a' element 'id' |
| 51 | * attribute. The id mode uses 'post-' with the post ID for the 'id' attribute. |
| 52 | * |