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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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714 |
|
715 | /** |
716 | * Filters the default post title initially used in the "Write Post" form. |
717 | * |
718 | * @since 1.5.0 |
719 | * |
720 | * @param string $post_title Default post title. |
721 | * @param WP_Post $post Post object. |
722 | */ |
723 | $post->post_title = (string) apply_filters( 'default_title', $post_title, $post ); |
724 |
|
725 | /** |
726 | * Filters the default post excerpt initially used in the "Write Post" form. |
727 | * |
728 | * @since 1.5.0 |
729 | * |
730 | * @param string $post_excerpt Default post excerpt. |
731 | * @param WP_Post $post Post object. |
732 | */ |