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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 |
|---|---|
| 584 | * |
| 585 | * @param int $post_id An optional post ID to check instead of the current post. |
| 586 | * @return bool True if pings are accepted |
| 587 | */ |
| 588 | function pings_open( $post_id = NULL ) { |
| 589 | |
| 590 | $_post = get_post($post_id); |
| 591 | |
| 592 | $open = ( 'open' == $_post->ping_status ); |
| 593 | return apply_filters( 'pings_open', $open, $post_id ); |
| 594 | } |
| 595 | |
| 596 | /** |
| 597 | * Displays form token for unfiltered comments. |
| 598 | * |
| 599 | * Will only display nonce token if the current user has permissions for |
| 600 | * unfiltered html. Won't display the token for other users. |
| 601 | * |
| 602 | * The function was backported to 2.0.10 and was added to versions 2.1.3 and |