squelched various php and wp notices and warnings, enqueuing admin css and js better

wp-ffpc-abstract.php

@@ -123,26 +123,12 @@ if (!class_exists('WP_Plugins_Abstract')) {
 			/* setup plugin, plugin specific setup functions that need options */
 			$this->plugin_setup();
 
-			/* add admin styling */
-			if( is_admin() ) {
-				/* jquery ui tabs is provided by WordPress */
-				wp_enqueue_script ( "jquery-ui-tabs" );
-				wp_enqueue_script ( "jquery-ui-slider" );
 
-				/* additional admin styling */
+			add_action( 'admin_enqueue_scripts', array(&$this,'enqueue_admin_css_js'));
-				$css_handle = $this->plugin_constant . '-admin-css';
-				$css_file = $this->plugin_constant . '-admin.css';
-				if ( @file_exists ( $this->plugin_dir . $css_file ) )
-				{
-					$css_src = $this->plugin_url . $css_file;
-					wp_register_style( $css_handle, $css_src, false, false, 'all' );
-					wp_enqueue_style( $css_handle );
-				}
-			}
 
-			register_activation_hook( $this->plugin_file , array( $this , 'plugin_activate') );
+			register_activation_hook( $this->plugin_file , 'plugin_activate' );
-			register_deactivation_hook( $this->plugin_file , array( $this , 'plugin_deactivate') );
+			register_deactivation_hook( $this->plugin_file , 'plugin_deactivate' );
-			register_uninstall_hook( $this->plugin_file , array( $this , 'plugin_uninstall') );
+			register_uninstall_hook( $this->plugin_file , 'plugin_uninstall' );
 
 			/* register settings pages */
 			if ( $this->network )
@@ -234,6 +220,23 @@ if (!class_exists('WP_Plugins_Abstract')) {
 			return $links;
 		}
 
+		/* add admin styling */
+		public function enqueue_admin_css_js(){
+			/* jquery ui tabs is provided by WordPress */
+			wp_enqueue_script ( "jquery-ui-tabs" );
+			wp_enqueue_script ( "jquery-ui-slider" );
+
+			/* additional admin styling */
+			$css_handle = $this->plugin_constant . '-admin-css';
+			$css_file = $this->plugin_constant . '-admin.css';
+			if ( @file_exists ( $this->plugin_dir . $css_file ) )
+			{
+				$css_src = $this->plugin_url . $css_file;
+				wp_register_style( $css_handle, $css_src, false, false, 'all' );
+				wp_enqueue_style( $css_handle );
+			}
+		}
+
 		/**
 		 * deletes saved options from database
 		 */
@@ -462,6 +465,7 @@ if (!class_exists('WP_Plugins_Abstract')) {
 			else
 				$check_disabled = false;
 
+			$opt = '';
 			foreach ($elements as $value => $name ) {
 				//$disabled .= ( @array_key_exists( $valid[ $value ] ) && $valid[ $value ] == false ) ? ' disabled="disabled"' : '';
 				$opt .= '<option value="' . $value . '" ';

wp-ffpc-acache.php

@@ -250,7 +250,7 @@ function wp_ffpc_callback( $buffer ) {
 		$meta['pingback'] = get_bloginfo('pingback_url');
 
 	/* sync all http and https requests if enabled */
-	if ( $config['sync_protocols'] == '1' )	{
+	if ( isset( $config['sync_protocols'] ) && $config['sync_protocols'] == '1' )	{
 		if ( isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' )
 			$_SERVER['HTTPS'] = 'on';
 

wp-ffpc-backend.php

@@ -305,7 +305,7 @@ if (!class_exists('WP_FFPC_Backend')) {
 					//throw new Exception ( $message );
 				break;
 				default:
-					if ( function_exists( 'syslog' ) && $this->options['debug'] )
+					if ( function_exists( 'syslog' ) && isset($this->options['debug']) && $this->options['debug'] )
 						syslog( $log_level , self::plugin_constant . " with " . $this->options['cache_type'] . ' ' . $message );
 				break;
 			}

wp-ffpc-class.php

@@ -242,28 +242,28 @@ if ( ! class_exists( 'WP_FFPC' ) ) {
 			/**
 			 * if options were saved, display saved message
 			 */
-			if ($_GET[ self::key_save ]=='true' || $this->status == 1) : ?>
+			if (isset($_GET[ self::key_save ]) && $_GET[ self::key_save ]=='true' || $this->status == 1) : ?>
 				<div class='updated settings-error'><p><strong><?php _e( 'Settings saved.' , $this->plugin_constant ) ?></strong></p></div>
 			<?php endif;
 
 			/**
 			 * if options were delete, display delete message
 			 */
-			if ($_GET[ self::key_delete ]=='true' || $this->status == 2) : ?>
+			if (isset($_GET[ self::key_delete ]) && $_GET[ self::key_delete ]=='true' || $this->status == 2) : ?>
 				<div class='error'><p><strong><?php _e( 'Plugin options deleted.' , $this->plugin_constant ) ?></strong></p></div>
 			<?php endif;
 
 			/**
 			 * if options were saved
 			 */
-			if ($_GET[ self::key_flush ]=='true' || $this->status == 3) : ?>
+			if (isset($_GET[ self::key_flush ]) && $_GET[ self::key_flush ]=='true' || $this->status == 3) : ?>
 				<div class='updated settings-error'><p><strong><?php _e( "Cache flushed." , $this->plugin_constant ); ?></strong></p></div>
 			<?php endif;
 
 			/**
 			 * if options were saved, display saved message
 			 */
-			if ($_GET[ self::key_precache ]=='true' || $this->status == 4) : ?>
+			if (isset($_GET[ self::key_precache ]) && $_GET[ self::key_precache ]=='true' || $this->status == 4) : ?>
 			<div class='updated settings-error'><p><strong><?php _e( 'Precache process was started, it is now running in the background, please be patient, it may take a very long time to finish.' , $this->plugin_constant ) ?></strong></p></div>
 			<?php endif;
 
@@ -769,6 +769,7 @@ if ( ! class_exists( 'WP_FFPC' ) ) {
 
 			/* set upstream servers from configured servers, best to get from the actual backend */
 			$servers = $this->backend->get_servers();
+			$nginx_servers = '';
 			foreach ( array_keys( $servers ) as $server ) {
 				$nginx_servers .= "		server ". $server .";\n";
 			}