wordpress snippets last updated   : January 27, 2015
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Automatically categorize and tag posts when saved

wordpress snippet

Adding this snippet to the functions.php of your wordpress theme will let you automatically categorize and tag posts when you save them. Don’t forget to add a new tag or a new category

( example screenshot )
snippet :  PHPcopy
<?php

add_action( 'wp_insert_post', 'update_post_terms' );

function update_post_terms( $post_id ) {
    if ( $parent = wp_is_post_revision( $post_id ) )
        $post_id = $parent;
    $post = get_post( $post_id );
    if ( $post->post_type != 'post' )
        return;

    // add a tag
    wp_set_post_terms( $post_id, 'new tag', 'post_tag', true );

    // add a category
    $categories = wp_get_post_categories( $post_id );
    $newcat    = get_term_by( 'name', 'Some Category', 'category' );

    array_push( $categories, $newcat->term_id );
    wp_set_post_categories( $post_id, $categories );
}
?>
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