More wp-super-cache notice fixes

wp-cache-phase2.php.diff

diff --git a/wp-content/plugins/wp-super-cache/wp-cache-phase2.php b/wp-content/plugins/wp-super-cache/wp-cache-phase2.php
index 739512e..86f6086 100644
--- a/wp-content/plugins/wp-super-cache/wp-cache-phase2.php
+++ b/wp-content/plugins/wp-super-cache/wp-cache-phase2.php
@@ -59,7 +59,7 @@ function wp_cache_phase2() {
 		return false;
 	}
 
-	if ( $wp_cache_object_cache && !empty( $_GET ) ) {
+	if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache && !empty( $_GET ) ) {
 		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching GET request while object cache storage enabled.', 5 );
 		return false;
 	}
@@ -413,7 +413,7 @@ function wp_cache_get_ob(&$buffer) {
 		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( 'Not caching for known user.', 5 );
 	}
 
-	if ( $wp_cache_object_cache ) { // half on mode when using the object cache
+	if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache ) { // half on mode when using the object cache
 		if ( wp_cache_get_cookies_values() != '' ) {
 			$cache_enabled = false;
 			$cache_error = 'Known User and using object. Only anonymous users cached.';
@@ -435,7 +435,7 @@ function wp_cache_get_ob(&$buffer) {
 	$fr = $fr2 = $gz = false;
 	// Open wp-cache cache file
 	if ( !$supercacheonly ) {
-		if ( false == $wp_cache_object_cache ) {
+		if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 			$fr = @fopen($tmp_wpcache_filename, 'w');
 			if (!$fr) {
 				if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Error. Supercache could not write to " . str_replace( ABSPATH, '', $cache_path ) . $cache_filename, 1 );
@@ -499,7 +499,7 @@ function wp_cache_get_ob(&$buffer) {
 		if ( false == isset( $wp_super_cache_late_init ) || ( isset( $wp_super_cache_late_init ) && $wp_super_cache_late_init == 0 ) )
 			$buffer .= '<!-- Super Cache dynamic page detected but $wp_super_cache_late_init not set. See the readme.txt for further details. -->';
 
-		if ( false == $wp_cache_object_cache ) {
+		if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 			if( $fr ) { // legacy caching
 				fputs($fr, $store);
 			} elseif ( isset( $fr2 ) ) { // supercache active
@@ -537,7 +537,7 @@ function wp_cache_get_ob(&$buffer) {
 			$wp_cache_meta[ 'headers' ][ 'Content-Encoding' ] = 'Content-Encoding: ' . $wp_cache_gzip_encoding;
 			$wp_cache_meta[ 'headers' ][ 'Vary' ] = 'Vary: Accept-Encoding, Cookie';
 			// Return uncompressed data & store compressed for later use
-			if ( false == $wp_cache_object_cache ) {
+			if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 				if( $fr ) {
 					if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Writing gzipped buffer to wp-cache cache file.", 5 );
 					fputs($fr, $gzdata);
@@ -548,7 +548,7 @@ function wp_cache_get_ob(&$buffer) {
 			}
 		} else { // no compression
 			$wp_cache_meta[ 'headers' ][ 'Vary' ] = 'Vary: Cookie';
-			if ( false == $wp_cache_object_cache ) {
+			if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 				if( $fr ) {
 					if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Writing non-gzipped buffer to wp-cache cache file.", 5 );
 					fputs($fr, $buffer);
@@ -558,7 +558,7 @@ function wp_cache_get_ob(&$buffer) {
 				$added_cache = 1;
 			}
 		}
-		if ( false == $wp_cache_object_cache ) {
+		if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 			if( $fr2 ) {
 				if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Writing non-gzipped buffer to supercache file.", 5 );
 				fputs($fr2, $buffer . '<!-- super cache -->' );
@@ -570,7 +570,7 @@ function wp_cache_get_ob(&$buffer) {
 		}
 	}
 	$new_cache = true;
-	if ( false == $wp_cache_object_cache ) {
+	if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 		if( $fr ) {
 			$supercacheonly = false;
 			fclose($fr);
@@ -868,7 +868,7 @@ function wp_cache_shutdown_callback() {
 		$serial = serialize($wp_cache_meta);
 		if( wp_cache_writers_entry() ) {
 			if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Writing meta file: {$blog_cache_dir}meta/{$meta_file}", 2 );
-			if ( false == $wp_cache_object_cache ) {
+			if ( !isset( $wp_cache_object_cache ) || false == $wp_cache_object_cache ) {
 				$tmp_meta_filename = $blog_cache_dir . 'meta/' . uniqid( mt_rand(), true ) . '.tmp';
 				$fr = @fopen( $tmp_meta_filename, 'w');
 				if( !$fr )
@@ -966,7 +966,7 @@ function wp_cache_clear_cache_on_menu() {
 /* Clear out the cache directory. */
 function wp_cache_clear_cache( $blog_id = 0 ) {
 	global $cache_path, $wp_cache_object_cache;
-	if ( $wp_cache_object_cache ) {
+	if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache ) {
 		reset_oc_version();
 	} else {
 		if ( $blog_id == 0 ) {
@@ -983,7 +983,7 @@ function wp_cache_clear_cache( $blog_id = 0 ) {
 
 /* check if we want to clear out all cached files on post updates, otherwise call standard wp_cache_post_change() */
 function wp_cache_post_edit($post_id) {
-	global $wp_cache_clear_on_post_edit, $cache_path, $blog_cache_dir;
+	global $wp_cache_clear_on_post_edit, $cache_path, $blog_cache_dir, $wp_cache_object_cache;
 	static $last_post_edited = -1;
 
 	if ( $post_id == $last_post_edited ) return $post_id;
@@ -996,7 +996,7 @@ function wp_cache_post_edit($post_id) {
 	}
 	if( $wp_cache_clear_on_post_edit ) {
 		if ( isset( $GLOBALS[ 'wp_super_cache_debug' ] ) && $GLOBALS[ 'wp_super_cache_debug' ] ) wp_cache_debug( "Clearing cache $blog_cache_dir and {$cache_path}supercache/ on post edit per config.", 2 );
-		if ( $wp_cache_object_cache ) {
+		if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache ) {
 			reset_oc_version();
 		} else {
 			prune_super_cache( $blog_cache_dir, true );
@@ -1010,8 +1010,8 @@ function wp_cache_post_edit($post_id) {
 
 function wp_cache_post_id_gc( $siteurl, $post_id, $all = 'all' ) {
 	global $cache_path, $wp_cache_object_cache, $wp_cache_refresh_single_only;
-	
-	if ( $wp_cache_object_cache )
+
+	if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache )
 		reset_oc_version();
 
 	$post_id = intval( $post_id );
@@ -1065,7 +1065,7 @@ function wp_cache_post_change( $post_id ) {
 		$all = true;
 	}
 
-	if ( $wp_cache_object_cache )
+	if ( isset( $wp_cache_object_cache ) && $wp_cache_object_cache )
 		reset_oc_version();
 
 	$permalink = trailingslashit( str_replace( get_option( 'siteurl' ), '', post_permalink( $post_id ) ) );