Index: install-helper.php
===================================================================
--- install-helper.php	(revision 46888)
+++ install-helper.php	(working copy)
@@ -52,7 +52,7 @@
 	function maybe_create_table( $table_name, $create_ddl ) {
 		global $wpdb;
 		foreach ( $wpdb->get_col( 'SHOW TABLES', 0 ) as $table ) {
-			if ( $table == $table_name ) {
+			if ( $table === $table_name ) {
 				return true;
 			}
 		}
@@ -61,7 +61,7 @@
 
 		// We cannot directly tell that whether this succeeded!
 		foreach ( $wpdb->get_col( 'SHOW TABLES', 0 ) as $table ) {
-			if ( $table == $table_name ) {
+			if ( $table === $table_name ) {
 				return true;
 			}
 		}
@@ -86,7 +86,7 @@
 		global $wpdb;
 		foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) {
 
-			if ( $column == $column_name ) {
+			if ( $column === $column_name ) {
 				return true;
 			}
 		}
@@ -96,7 +96,7 @@
 
 		// We cannot directly tell that whether this succeeded!
 		foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) {
-			if ( $column == $column_name ) {
+			if ( $column === $column_name ) {
 				return true;
 			}
 		}
@@ -119,7 +119,7 @@
 function maybe_drop_column( $table_name, $column_name, $drop_ddl ) {
 	global $wpdb;
 	foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) {
-		if ( $column == $column_name ) {
+		if ( $column === $column_name ) {
 
 			// Found it, so try to drop it.
 			$wpdb->query( $drop_ddl );
@@ -126,7 +126,7 @@
 
 			// We cannot directly tell that whether this succeeded!
 			foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) {
-				if ( $column == $column_name ) {
+				if ( $column === $column_name ) {
 					return false;
 				}
 			}
@@ -172,22 +172,22 @@
 
 	foreach ( $results as $row ) {
 
-		if ( $row->Field == $col_name ) {
+		if ( $row->Field === $col_name ) {
 
 			// Got our column, check the params.
-			if ( ( $col_type != null ) && ( $row->Type != $col_type ) ) {
+			if ( ( $col_type != null ) && ( $row->Type !== $col_type ) ) {
 				++$diffs;
 			}
 			if ( ( $is_null != null ) && ( $row->Null != $is_null ) ) {
 				++$diffs;
 			}
-			if ( ( $key != null ) && ( $row->Key != $key ) ) {
+			if ( ( $key != null ) && ( $row->Key !== $key ) ) {
 				++$diffs;
 			}
-			if ( ( $default != null ) && ( $row->Default != $default ) ) {
+			if ( ( $default !== null ) && ( $row->Default !== $default ) ) {
 				++$diffs;
 			}
-			if ( ( $extra != null ) && ( $row->Extra != $extra ) ) {
+			if ( ( $extra !== null ) && ( $row->Extra !== $extra ) ) {
 				++$diffs;
 			}
 			if ( $diffs > 0 ) {