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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 |
|---|---|
| 2840 | do { |
| 2841 | $alt_post_name = substr( $slug, 0, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; |
| 2842 | $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) ); |
| 2843 | $suffix++; |
| 2844 | } while ( $post_name_check ); |
| 2845 | $slug = $alt_post_name; |
| 2846 | } |
| 2847 | } |
| 2848 | |
| 2849 | return apply_filters( 'wp_unique_post_slug', $slug, $post_ID, $post_status, $post_type, $post_parent ); |
| 2850 | } |
| 2851 | |
| 2852 | /** |
| 2853 | * Adds tags to a post. |
| 2854 | * |
| 2855 | * @uses wp_set_post_tags() Same first two parameters, but the last parameter is always set to true. |
| 2856 | * |
| 2857 | * @package WordPress |
| 2858 | * @subpackage Post |