WPDB: When deciding if a query needs extra sanity checking based on collation, we can quickly return if the query is entirely ASCII characters.

See #32029.


Built from https://develop.svn.wordpress.org/trunk@32233


git-svn-id: http://core.svn.wordpress.org/trunk@32207 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-RC2-32232';
+$wp_version = '4.2-RC2-32233';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-includes/wp-db.php

@@ -2405,6 +2405,11 @@ class wpdb {
 			return true;
 		}
 
+		// All-ASCII queries don't need extra checking.
+		if ( $this->check_ascii( $query ) ) {
+			return true;
+		}
+
 		$table = $this->get_table_from_query( $query );
 		if ( ! $table ) {
 			return false;