Merge pull request #2363 from WordPress/feature/cs-closures-should-be-static

Author: GaryJones

WordPress/Sniffs/DB/PreparedSQLPlaceholdersSniff.php

@@ -327,7 +327,7 @@ public function process_token( $stackPtr ) {
 				if ( $stripped_content !== $content ) {
 					$vars_without_wpdb = array_filter(
 						TextStrings::getEmbeds( $content ),
-						function ( $symbol ) {
+						static function ( $symbol ) {
 							return preg_match( '`^\{?\$\{?wpdb\??->`', $symbol ) !== 1;
 						}
 					);

WordPress/Sniffs/DB/PreparedSQLSniff.php

@@ -176,7 +176,7 @@ public function process_token( $stackPtr ) {
 
 				$bad_variables = array_filter(
 					TextStrings::getEmbeds( $this->tokens[ $this->i ]['content'] ),
-					function ( $symbol ) {
+					static function ( $symbol ) {
 						return preg_match( '`^\{?\$\{?wpdb\??->`', $symbol ) !== 1;
 					}
 				);