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As a proof of concept, I'd like to create a simple plugin that loads some content, say "hello world" just after the_content on the home page only. How can I do this from a plugin?

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7

You mean a filter and a check for is_home()?

add_filter( 'the_content', 'wpse6034_the_content' );
function wpse6034_the_content( $content )
{
    if ( is_home() ) {
        $content .= '<p>Hello World!</p>';
    }
    return $content;
}
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  • Jan, can you tell me how you might alter your example, if I only want my plugin to filter content when the home page is viewed? This example works, but it runs the filter on every page.
    – Scott B
    Commented Jan 6, 2011 at 12:53
  • @Scott: Then you want to run add_filter() only when is_home() is true. Remember that you can't check for is_home() only after the query has run, so probably in the init hook?
    – Jan Fabry
    Commented Jan 6, 2011 at 13:39
  • Any idea if I want to do something similar? Simple plug-in that creates new custom home page. Nothing comes from active theme. wordpress.stackexchange.com/questions/110118/…
    – Radek
    Commented Aug 17, 2013 at 7:11
  • 1
    Perhaps useful to the next guy, it took me awhile to realize you don't want to $content = get_the_content() and then append to that (which is not what this example shows either). Doing so will mess things like auto-embeds up.
    – Nathan
    Commented Nov 24, 2020 at 20:31

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