bytes-php-code.php

<?php
/**
 * Plugin Name: Byte's PHP Code Widget Plugin
 * Plugin URI:
 * Description: A widget that allows the mixing of PHP and html with before and after post support.
 * Version: 0.4
 * Author: ByteEnable
 * Author URI:
 * License: GPL2
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 */

/*  Copyright 2013  ByteEnable  (email : ByteEnable@gmail.com)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/


// Create the widget
// The class name looks convoluted to avoid any possible conflicts
class wp_vxBEyz_code_widget extends WP_Widget {
	function __construct() {
		parent::__construct ( 
				// Base ID of the widget
				'wp_vxBEyz_code_widget', 
				
				// Widget name will appear in UI
				__ ( 'Byte\'s PHP Code Widget', 'wp_vxBEyz_code_widget_domain' ), 
				
				// Widget description
				array (
						'description' => __ ( 'Puts custom code in the sidebar', 'wp_vxBEyz_code_widget_domain' ) 
				) );
	}
	
	// Creating the widget front-end
	// This is the function where the actual work takes place.
	public function widget($args, $instance) {
		$title = apply_filters ( 'widget_title', $instance ['title'] );
		$showTitle = apply_filters ( 'widget_showTitle', $instance ['showTitle'] );
		$regularCode = apply_filters ( 'widget_regularCode', $instance ['regularCode'] );
		$beforePostBool = apply_filters ( 'widget_beforePostBool', $instance ['beforePostBool'] );
		$afterPostBool = apply_filters ( 'widget_afterPostBool', $instance ['afterPostBool'] );
		
		// Initialize the adsense variable
		$myMobileAdsenseClient = "";
		$myMobileAdsenseSlot = "";
		
		// This is where the code is evaluted and or executed with the result printed.
		// Evalute $regularCode variable
		
		ob_start ();
		eval ( '?>' . $regularCode );
		// Get the result of $regularCode execution;
		$regularCode = ob_get_contents ();
		ob_end_clean ();
		if (wp_is_mobile () && ! empty ( $myMobileAdsenseClient ) && !$beforePostBool && !$afterPostBool ) {
			include_once (plugin_dir_path ( __FILE__ ) . 'inc/adsense-support.php');
			$regularCode = google_mobile_ad ( $myMobileAdsenseClient, $myMobileAdsenseSlot );
		}
		if ( ! wp_is_mobile() && !$beforePostBool && !$afterPostBool) {
			// Before and after widget arguments are defined by themes.
			echo $args ['before_widget'];
			// Output the title name if one exists and user wants it displayed.
			if (! empty ( $title ) && $showTitle ) {
				echo $args ['before_title'] . $title . $args ['after_title'];
			}
			echo __ ( $regularCode, 'wp_vxBEyz_code_widget_domain' );
			echo $args ['after_widget'];
		}
	}
	
	// Widget Backend - process the form data
	public function form($instance) {
		if (isset ( $instance ['title'] )) {
			$title = $instance ['title'];
		}
		if (isset ( $instance ['regularCode'] )) {
			$regularCode = $instance ['regularCode'];
		} else { // Clear it.
			$regularCode = __ ( '', 'wp_vxBEyz_code_widget_domain' );
		}
		if (isset ( $instance ['beforePostBool'] )) {
			$beforePostBool = $instance ['beforePostBool'];
		} else { // Clear it.
			$beforePostBool = __ ( '', 'wp_vxBEyz_code_widget_domain' );
		}
		if (isset ( $instance ['afterPostBool'] )) {
			$afterPostBool = $instance ['afterPostBool'];
		} else { // Clear it.
			$afterPostBool = __ ( '', 'wp_vxBEyz_code_widget_domain' );
		}
		if (isset ( $instance ['showTitle'] )) {
			$showTitle = $instance ['showTitle'];
		} else { // Clear it.
			$showTitle = __ ( '', 'wp_vxBEyz_code_widget_domain' );
		}
		// Widget admin form
		?>
<p>
	<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
	<input class="widefat"
		id="<?php echo $this->get_field_id( 'title' ); ?>"
		name="<?php echo $this->get_field_name( 'title' ); ?>" type="text"
		value="<?php echo esc_attr( $title ); ?>" /> <label
		for="<?php echo $this->get_field_id( 'Code' ); ?>"><?php _e( 'Code:' ); ?></label>
	<textarea class="widefat" rows="5"
		id="<?php echo $this->get_field_id( 'regularCode' ); ?>"
		name="<?php echo $this->get_field_name( 'regularCode' ); ?>"><?php echo esc_attr( $regularCode ); ?></textarea>

	<label for="<?php echo $this->get_field_id( 'beforePostBool' ); ?>">Before
		Post Insertion:</label> <input class="checkbox" type="checkbox"
		<?php checked( $instance['beforePostBool'], 'on' ); ?>
		id="<?php echo $this->get_field_id( 'beforePostBool' ); ?>"
		name="<?php echo $this->get_field_name( 'beforePostBool' ); ?>" /> <br>
		
	<label for="<?php echo $this->get_field_id( 'afterPostBool' ); ?>">After
		Post Insertion:&nbsp;&nbsp;</label> <input class="checkbox"
		type="checkbox" <?php checked( $instance['afterPostBool'], 'on' ); ?>
		id="<?php echo $this->get_field_id( 'afterPostBool' ); ?>"
		name="<?php echo $this->get_field_name( 'afterPostBool' ); ?>" /> <br>
		
	<label for="<?php echo $this->get_field_id( 'showTitle' ); ?>">Show
		title in ouput:&nbsp;&nbsp;</label> <input class="checkbox"
		type="checkbox" <?php checked( $instance['showTitle'], 'on' ); ?>
		id="<?php echo $this->get_field_id( 'showTitle' ); ?>"
		name="<?php echo $this->get_field_name( 'showTitle' ); ?>" />
</p>
<?php
	}
	
	// Updating widget replacing old instances with new
	public function update($new_instance, $old_instance) {
		$instance = array ();
		// Clean title for grins. The plugin by default can be hazardous.
		$instance ['title'] = (! empty ( $new_instance ['title'] )) ? strip_tags ( $new_instance ['title'] ) : '';
		// Only authorized user can insert code.
		if (current_user_can ( 'unfiltered_html' )) {
			$instance ['regularCode'] = $new_instance ['regularCode'];
			$instance ['beforePostBool'] = $new_instance ['beforePostBool'];
			$instance ['afterPostBool'] = $new_instance ['afterPostBool'];
			$instance ['showTitle'] = $new_instance ['showTitle'];
		} 		// Non authorized user has his or her input cleaned (stripped of any php or html).
		else {
			$instance ['regularCode'] = stripslashes ( wp_filter_post_kses ( addslashes ( $new_instance ['regularCode'] ) ) );
			$instance ['beforePostBool'] = $new_instance ['beforePostBool'];
			$instance ['afterPostBool'] = $new_instance ['afterPostBool'];
			$instance ['showTitle'] = $new_instance ['showTitle'];
		}
		// User in after post.
		update_option ( 'bytes_post_code', $instance ['regularCode'] );
		update_option ( 'bytes_before_post_bool', $instance ['beforePostBool'] );
		update_option ( 'bytes_after_post_bool', $instance ['afterPostBool'] );

		return $instance;
	}
} // class wp_vxBEyz_code_widget ends here
  
// Register and load the widget
function wp_vxBEyz_code_load_widget() {
	register_widget ( 'wp_vxBEyz_code_widget' );
}
add_action ( 'widgets_init', 'wp_vxBEyz_code_load_widget' );
include_once (plugin_dir_path ( __FILE__ ) . 'inc/adsense-support.php');
// After the post code
// Add database code to store widget data

// What to do when the plugin is activated?

register_activation_hook ( __FILE__, 'bytes_php_code_install' );

// What to do when the plugin is deactivated? */

register_deactivation_hook ( __FILE__, 'bytes_php_code_remove' );

// Delete all the settings added.
function bytes_php_code_remove() {
	delete_option ( 'bytes_post_code' );
	delete_option ( 'bytes_before_post_bool' );
	delete_option ( 'bytes_after_post_bool' );
}
function bytes_php_code_install() {
	add_option ( 'bytes_post_code', '' );
	add_option ( 'bytes_after_post_bool', '' );
	add_option ( 'bytes_before_post_bool', '' );
}
function custom_content_after_post($content) {
	// Initialize the adsense variable
	$myMobileAdsenseClient = "";
	$myMobileAdsenseSlot = "";
	
	if (is_single () && (get_option ( 'bytes_after_post_bool' ) || get_option ( 'bytes_before_post_bool' ))) {
		// This is where the code is evaluted and or executed with the result printed.
		// Evalute the bytes_post_code variable
		ob_start ();
		eval ( '?>' . get_option ( 'bytes_post_code' ) );
		// Get the result of $regularCode execution;
		$regularCode = ob_get_contents ();
		ob_end_clean ();
		if (wp_is_mobile () && ! empty ( $myMobileAdsenseClient )) {
			include_once (plugin_dir_path ( __FILE__ ) . 'inc/adsense-support.php');
			if (get_option ( 'bytes_before_post_bool' )) {
				$content = google_mobile_ad ( $myMobileAdsenseClient, $myMobileAdsenseSlot ) . $content;
			} elseif (get_option ( 'bytes_after_post_bool' )) {
				$content .= google_mobile_ad ( $myMobileAdsenseClient, $myMobileAdsenseSlot );
			}
		} else {
			if (get_option ( 'bytes_before_post_bool' )) {
				$content = $regularCode . $content;
			}
			if (get_option ( 'bytes_after_post_bool' )) {
				$content .= $regularCode;
			}
		}
	}
	return $content;
}
add_filter ( "the_content", "custom_content_after_post" );
?>