Plugin not listed
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A simple Plugin did’nt work on Version 3.2.1 and 3.3.
Step 1:
Create the Plugin directory with the name “plugin-references” on wp-content/plugins/Step 2:
Create the Main-File of the Plugin with the name “plugin-references.php” on wp-content/plugins/plugin-references/Step 3:
Fill the Plugin-File with content:<?php /* Plugin Name: Plugin Reference Plugin URI: https://hovida-design.de/ Version: 1.0 Author: Adrian Preu? Author URI: mailto:[email protected] */ function plugin_reference($content) { $content = str_replace("[plugin-reference]", "Hello, iam the Plugin!", $content); return $content; } add_filter('the_content', 'plugin_reference'); ?>
Step 4:
Activate Plugin,..The Plugin can’t be activated. The Plugin are not on the Plugin-List in the Administration.
On Frontend (if WP-Debug on) give PHP a error/warning:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /****/wp-includes/plugin.php on line 170
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