M wp-ffpc-acache.php → wp-ffpc-acache.php

@@ -96,14 +96,14 @@ }
 }
 
 /* serve cache 404 status */
-if ( $wp_ffpc_values['meta']['status'] == 404 ) {
+if ( isset( $wp_ffpc_values['meta']['status'] ) &&  $wp_ffpc_values['meta']['status'] == 404 ) {
 	header("HTTP/1.1 404 Not Found");
 	flush();
 	die();
 }
 
 /* server redirect cache */
-if ( $wp_ffpc_values['meta']['redirect'] ) {
+if ( isset( $wp_ffpc_values['meta']['redirect'] ) && $wp_ffpc_values['meta']['redirect'] ) {
 	header('Location: ' . $wp_ffpc_values['meta']['redirect'] );
 	flush();
 	die();

M wp-ffpc-class.php → wp-ffpc-class.php

@@ -582,7 +582,7 @@ <fieldset id="<?php echo $this->plugin_constant ?>-precache">
 				<legend><?php _e( 'Precache', $this->plugin_constant ); ?></legend>
 				<dl>
 					<dt>
-						<?php if ( $_GET[ self::key_precache_disabled ]=='true' || $this->status == 5 || $this->shell_function == false ) : ?>
+						<?php if ( isset( $_GET[ self::key_precache_disabled ] ) && $_GET[ self::key_precache_disabled ] =='true' || $this->status == 5 || $this->shell_function == false ) : ?>
 							<strong><?php _e( "Precache functionality is disabled due to unavailable system call function. <br />Since precaching may take a very long time, it's done through a background CLI process in order not to run out of max execution time of PHP. Please enable one of the following functions if you whish to use precaching: " , $this->plugin_constant ) ?><?php echo join( ',' , $this->shell_possibilities ); ?></strong>
 						<?php else: ?>
 							<input class="button-secondary" type="submit" name="<?php echo $this->button_precache ?>" id="<?php echo $this->button_precache ?>" value="<?php _e('Pre-cache', $this->plugin_constant ) ?>" />