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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 |
---|---|
4060 | * |
4061 | * Therefore, if you are looking to only fire a callback when a post is first |
4062 | * transitioned to a status, use the {@see 'transition_post_status'} hook instead. |
4063 | * |
4064 | * @since 2.3.0 |
4065 | * |
4066 | * @param int $post_id Post ID. |
4067 | * @param WP_Post $post Post object. |
4068 | */ |
4069 | do_action( "{$new_status}_{$post->post_type}", $post->ID, $post ); |
4070 | } |
4071 |
|
4072 | // |
4073 | // Comment, trackback, and pingback functions. |
4074 | // |
4075 |
|
4076 | /** |
4077 | * Add a URL to those already pinged. |
4078 | * |