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1. MeltingDog
   Member
   Posted 1 year ago #
   

   I am trying to create my first plugin. So far it actually works fine but for one error:

   I get a 'Headers Already Sent' PHP message when I try to login to wp-admin.

   If I remove the plugin file from the wpcontent/plugins directory, login as usual, then replace the plugin file it works fine - this just seems to occur with login in and out.

   My (abridged) code is:

   <?php
   /*
   Plugin Name: Product Manager
   Plugin URI: http://www.tech-knowledge.com.au
   Description: Add, edit and remove products
   Version: 1.0
   Author: Me
   Author URI: http://www.tech-knowledge.com.au
   License: Restricted
   */
   
   if ( is_admin() ){
   /* Call the html code */
   add_action('admin_menu', 'prodmanager_admin_menu');
   
   function prodmanager_admin_menu() {
   add_options_page('Product Manager', 'Product Manager', 'administrator',
   'product-manager', 'prodmanager_html_page');
   }
   }
   
   function prodmanager_html_page() {
   ?>
   
   <div>
   
   <h2>Product Manager</h2>
   <!--usual HTML and PHP Code-->
   </div>
   ?>

   Let me know if you would like to see it all.

   Any advice would be really, really appreciated!

   Thanks!

2. MeltingDog
   Member
   Posted 1 year ago #
   

   HI all,

   I have found the issue. I had a closing php tag: ?> at the end of my code. This should not occur in plaugins

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