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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 ?

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 Answers 3

The hook is save_post:

add_action('save_post', 'dosomething'), 10, 2);

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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.

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Thanks for your help. Can i stop the post from being saved in the database using this hook ? How ? –  WarDoGG Mar 15 '11 at 3:54

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');
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None of these happen before the post is inserted into the database –  Bainternet Mar 15 '11 at 1:34

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