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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 |
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653 |
|
654 | /** |
655 | * Filters the default post excerpt initially used in the "Write Post" form. |
656 | * |
657 | * @since 1.5.0 |
658 | * |
659 | * @param string $post_excerpt Default post excerpt. |
660 | * @param WP_Post $post Post object. |
661 | */ |
662 | $post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt, $post ); |
663 |
|
664 | return $post; |
665 | } |
666 |
|
667 | /** |
668 | * Determine if a post exists based on title, content, and date |
669 | * |
670 | * @since 2.0.0 |
671 | * |