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I am using Shortcode exec php plugin and putting PHP code in a post via Wordpress Posts panel.

add_action( 'wp_loaded', 'echoFunction');

function echoFunction(){
    echo "someText";
}

Why doesn't this work? and how do I make it work?

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wp_loaded is called long, long before the post content is fetched. Put that code into a plugin.

Also, you shouldn't echo anything that early. The HTTP headers aren't sent yet on wp_loaded, so you will get the Headers already sent error, and your user authentication will not work: you cannot log in anymore.

  • You mean I should make my own plugin, yes? Ty – user2879175 May 17 '15 at 17:37
  • @user2879175 Yes, exactly. :) I have added a link to my answer that leads to a post explaining how to do that. – fuxia May 17 '15 at 17:41

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