How to display an icon when a new post is published and then remove it when a specific time past?

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Every time i publish a new post i want to display an icon like a badge (NEW) and after a specific time it will disappear.

Lets say i publish a new post and i want to display that it is a new post. So i want to insert an icon that for example a star, in each new post in the blog list view into the metadata of the posts. Also i want to be removed after a specific time will pass. Lets say in one day or 24 hours the icon should be removed automatically.

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How can i do this?

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1 comment

  1. Filter the content of post_class():

    add_filter( 'post_class', function( $classes ) {

    if ( is_singular() )
        return $classes;

    // now minus last mod time in seconds
    $diff = time() - mysql2date( 'U', $post->post_date );

    if ( DAY_IN_SECONDS <= $diff )
        $classes[] = 'new-post';

    return $classes;
});

    Now, in your loop, use post_class(), and you get an extra class you can use in your stylesheet:

    .new-post {
    padding-left: 20px;
    background-image: url(new.png) left top no-repeat;
}

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