installed plugin W3 Total Cache version 2.3.2
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Gitium
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<?php
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namespace W3TCExample;
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class Extension_Example {
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/**
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* W3 Total cache config
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*/
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private $config;
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/**
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* Runs extension
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*/
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function run() {
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// obtain w3tc config
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$this->config = w3tc_config();
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// get value of config option and use it
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if ( $this->config->get_boolean( array( 'example' , 'is_title_postfix' ) ) )
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add_filter( 'the_title', array( $this, 'the_title' ), 10, 2 );
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}
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/**
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* the_title filter handler.
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* This extension adds specified postfix to each post title if extensions
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* is configured so on its settings page
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*/
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public function the_title( $title, $id ) {
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return $title .
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$this->config->get_string( array( 'example' , 'title_postfix' ) );
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}
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}
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/*
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This file is simply loaded by W3 Total Cache in a case if extension is active.
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Its up to extension what will it do or which way will it do.
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*/
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$p = new Extension_Example();
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$p->run();
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if ( is_admin() ) {
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$p = new Extension_Example_Admin();
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$p->run();
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}
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<?php
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namespace W3TCExample;
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/**
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* Backend functionality of an extension.
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* This class is loaded only for wp-admin/ requests
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*/
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class Extension_Example_Admin {
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/**
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* w3tc_extensions filter handler
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*
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* @param array $extensions array of extension descriptors to fill
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* @param Config $config w3-total-cache configuration
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* @return array
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*/
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static public function w3tc_extensions( $extensions, $config ) {
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$extensions['example'] = array (
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'name' => 'Example Extension',
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'author' => 'W3 EDGE',
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'description' => __( 'Example extension' ),
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'author_uri' => 'https://www.w3-edge.com/',
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'extension_uri' => 'https://www.w3-edge.com/',
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'extension_id' => 'example',
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'settings_exists' => true,
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'version' => '1.0',
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'enabled' => true,
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'requirements' => '',
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'path' => 'w3-total-cache-example/Extension_Example.php'
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);
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return $extensions;
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}
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/**
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* Entry point of extension for wp-admin/ requests
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* Called from Extension_Example.php
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*/
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public function run() {
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// handle settings page of this extension
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add_action( 'w3tc_extension_page_example', array(
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$this,
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'w3tc_extension_page'
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) );
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// get control when configuration is changed by user
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add_action( 'w3tc_config_ui_save', array(
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$this,
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'w3tc_config_ui_save'
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), 10, 2 );
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// Register widget on W3 Total Cache Dashboard page
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add_action( 'w3tc_widget_setup', array(
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$this,
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'w3tc_widget_setup'
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) );
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// get control when extension is deactivated
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add_action( 'w3tc_deactivate_extension_example', array(
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$this, 'w3tc_deactivate_extension' ) );
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}
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/**
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* Show settings page
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*/
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public function w3tc_extension_page() {
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include dirname( __FILE__ ) . '/Extension_Example_Page_View.php';
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}
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/**
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* Get control when configuration is changed by user
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*/
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public function w3tc_config_ui_save( $config, $old_config ) {
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if ( $config->get( array( 'example', 'is_title_postfix' ) ) !=
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$old_config->get( array( 'example', 'is_title_postfix' ) ) ||
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$config->get( array( 'example', 'title_postfix' ) ) !=
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$old_config->get( array( 'example', 'title_postfix' ) ) ) {
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// flush all content caches, since our extension will now alter
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// content
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w3tc_flush_posts();
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}
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}
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/**
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* Registers widget on W3 Total Cache Dashboard page
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*/
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public function w3tc_widget_setup() {
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$screen = get_current_screen();
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add_meta_box( 'example', 'example', array( $this, 'widget_content' ),
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$screen, 'normal', 'core' );
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}
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/**
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* Renders content of widget
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*/
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public function widget_content() {
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echo "Example extension's widget";
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}
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/**
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* Called when extension is deactivated.
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* Perform a cleanup here
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*/
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public function w3tc_deactivate_extension() {
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}
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}
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<?php
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namespace W3TCExample;
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if ( ! defined( 'W3TC' ) ) {
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die();
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}
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?>
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<p>
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<?php esc_html_e( 'Jump to:', 'w3-total-cache' ); ?>
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<a href="admin.php?page=w3tc_general"><?php esc_html_e( 'Main Menu', 'w3-total-cache' ); ?></a> |
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<a href="admin.php?page=w3tc_extensions"><?php esc_html_e( 'Extensions', 'w3-total-cache' ); ?></a>
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</p>
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<p><?php esc_html_e( 'Example extension is currently ', 'w3-total-cache' ); ?><span class="w3tc-enabled"><?php esc_html_e( 'enabled', 'w3-total-cache' ); ?></span></p>
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<div class="metabox-holder">
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<?php
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// render settings box header.
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\W3TC\Util_Ui::postbox_header( 'Example extension' );
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?>
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<table class="form-table">
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<?php
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// render controls showing content of w3tc configuration options.
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\W3TC\Util_Ui::config_item(
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array(
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'key' => array( 'example', 'is_title_postfix' ),
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'control' => 'checkbox',
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'label' => __( 'Add postfix to page titles', 'w3-total-cache' ),
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'checkbox_label' => __( 'Enable', 'w3-total-cache' ),
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'description' => __( 'Check if you want to add postfix to each post title.', 'w3-total-cache' ),
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)
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);
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\W3TC\Util_Ui::config_item(
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array(
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'key' => array( 'example', 'title_postfix' ),
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'control' => 'textbox',
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'label' => __( 'Postfix to page titles', 'w3-total-cache' ),
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)
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);
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?>
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</table>
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<?php
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// render save button for ::config_item controls.
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\W3TC\Util_Ui::button_config_save( 'extension_example' );
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// render settings box footer.
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\W3TC\Util_Ui::postbox_footer();
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?>
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</div>
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<?php
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/*
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Plugin Name: W3 Total Cache Example Extension
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Description: W3 Total Cache Example Extension
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Version: 1.0
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Plugin URI: https://www.w3-edge.com/wordpress-plugins/w3-total-cache/
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Author: Frederick Townes
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Author URI: http://www.linkedin.com/in/fredericktownes
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Network: True
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*/
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/* Copyright (c) 2009 Frederick Townes <ftownes@w3-edge.com>
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W3 Total Cache is distributed under the GNU General Public License, Version 2,
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June 1991. Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin
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St, Fifth Floor, Boston, MA 02110, USA
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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if ( !defined( 'ABSPATH' ) ) {
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die();
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}
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/**
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* Class autoloader
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*
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* @param string $class Classname
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*/
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function w3tc_example_class_autoload( $class ) {
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if ( substr( $class, 0, 12 ) == 'W3TCExample\\' ) {
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$filename = dirname( __FILE__ ) . DIRECTORY_SEPARATOR .
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substr( $class, 12 ) . '.php';
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if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
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if ( !file_exists( $filename ) ) {
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debug_print_backtrace();
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}
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}
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require $filename;
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}
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}
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spl_autoload_register( 'w3tc_example_class_autoload' );
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add_action( 'w3tc_extensions', array(
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'\W3TCExample\Extension_Example_Admin',
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'w3tc_extensions'
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), 10, 2 );
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