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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 |
|---|---|
| 949 | * |
| 950 | * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default current post. |
| 951 | * @return bool True if pings are accepted |
| 952 | */ |
| 953 | function pings_open( $post_id = null ) { |
| 954 | |
| 955 | $_post = get_post($post_id); |
| 956 | |
| 957 | $open = ( 'open' == $_post->ping_status ); |
| 958 | return apply_filters( 'pings_open', $open, $post_id ); |
| 959 | } |
| 960 | |
| 961 | /** |
| 962 | * Display form token for unfiltered comments. |
| 963 | * |
| 964 | * Will only display nonce token if the current user has permissions for |
| 965 | * unfiltered html. Won't display the token for other users. |
| 966 | * |
| 967 | * The function was backported to 2.0.10 and was added to versions 2.1.3 and |