Shortcode return $content vs do_shortcode($content)

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I think the title of my question says it all.

When creating a shortcode, I’ve seen some people do do_shortcode($content) instead of $content.

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What is the difference?

Another thing, let’s say I have a shortcode [hello]World[/hello]. Wouldn’t returning do_shortcode($content) result in do_shortcode('World')?

From the codex, the examples given are as such, do_shortcode('[hello]')

So what will returning do_shortcode($content) interpret? (in the case of [hello])

Any practical examples or clear explanations would be greatly appreciated. Thanks.

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1 comment

  1. This is useful if you don’t know if the $content contains unknown shortcodes.

    Example

    Your shortcode

    add_shortcode( 'foo', 'shortcode_foo' );

function shortcode_foo(  $atts, $content = '' )
{
    return 'Foo!' . do_shortcode( $content );
}

    Now your user might write something like this:

    [foo][bar][/foo]

    You have no idea what [bar] does or that it even exists. So you let WordPress handle that per do_shortcode(). If you don’t do that, [bar] will not be parsed as shortcode and showed as is instead.

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