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62 lines
2.1 KiB
PHP
62 lines
2.1 KiB
PHP
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<?php
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/*
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Plugin Name: Sample Plugin
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Plugin URI: http://yourls.org/
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Description: Sample plugin to illustrate how actions and filters work. Read its source. Refer to the <a href="http://yourls.org/pluginapi">Plugin API documentation</a> for more details.
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Version: 0.1
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Author: Ozh
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Author URI: http://ozh.org/
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*/
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// No direct call
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if( !defined( 'YOURLS_ABSPATH' ) ) die();
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/* Example of an action
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*
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* We're going to add an entry to the menu.
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*
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* The menu is drawn by function yourls_html_menu() in file includes/functions-html.php.
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* Right before the function outputs the closing </ul>, notice the following function call:
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* yourls_do_action( 'admin_menu' );
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* This function says: "hey, for your information, I've just done something called 'admin menu', thought I'd let you know..."
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*
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* We're going to hook into this action and add our menu entry
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*/
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yourls_add_action( 'admin_menu', 'ozh_sample_add_menu' );
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/* This says: when YOURLS does action 'admin_menu', call function 'ozh_sample_add_menu'
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*/
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function ozh_sample_add_menu() {
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echo '<li><a href="http://ozh.org/">Ozh</a></li>';
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}
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/* And that's it. Activate the plugin and notice the new menu entry.
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*/
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/* Example of a filter
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*
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* We're going to modify the <title> of pages in the admin area
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*
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* The <title> tag is generated by function yourls_html_head() in includes/functions-html.php
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* Notice the following function call:
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* $title = yourls_apply_filter( 'html_title', 'YOURLS: Your Own URL Shortener' );
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* This function means: give $title the value "YOURLS: Your Own URL Shortener", unless a
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* filter modifies this value.
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*
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* We're going to hook into this filter and modify this value.
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*/
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yourls_add_filter( 'html_title', 'ozh_sample_change_title' );
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/* This says: when filter 'html_title' is triggered, send its value to function 'ozh_sample_change_title'
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* and use what this function will return.
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*/
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function ozh_sample_change_title( $value ) {
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$value = $value . ' (we have hacked this title)';
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return $value; // a filter *always* has to return a value
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}
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/* And that's it. Activate the plugin and notice how the page title changes */
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