WordPress hook before inserting post into database

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I need to do check the inserted post for certain keywords and perform some functions depending on the keywords found.

is there a wordpress hook that executes “just before the post is inserted into the database” ? Or will i have to modify wordpress core ?

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Also, i will need to prevent the post from being inserted into the database if some keywords are found. is this something that can be done with a hook ? Or will a core modification be needed ?

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3 comments

  1. Available actions:

    1. pre_post_update – Runs just before a post or page is updated.
    2. publish_post – Runs when a post is published, or if it is edited and its status is “published”.
    3. save_post – Runs whenever a post or page is created or updated, which could be from an import, post/page edit form, xmlrpc, or post by email.
    4. wp_insert_post – Same as save_post, runs immediately afterwards.

    More info: Plugin API/Action Reference

    Usage:

    <?php
add_action('action_name', 'callback_name');

  3. the hook is wp_insert_post_data

    which as two parameters ($data, $postarr) and its a filter hook that fires before inserting the post into the database so:

    add_filter('wp_insert_post_data','callback_function');

    as for save_post hook it happens after inserting the post to database.