changelog

extra/CHANGES.txt

@@ -15,6 +15,7 @@
 
 	Bugfixes:
 
+	php7: fix Reflect.field() for strings (#6276)
 	php7: fix `@:enum abstract` generation  without `-dce full` (#6175)
 	php7: fix using enum constructor with arguments as a call argument (#6177)
 	php7: fix `null` property access (#6281)

std/php7/Boot.hx

@@ -752,7 +752,7 @@ private class HxDynamicStr {
 			case 'lastIndexOf': return HxString.lastIndexOf.bind(str);
 			case 'split':       return HxString.split.bind(str);
 			case 'toString':    return HxString.toString.bind(str);
-			case 'substring':   return function(startIndex, ?endIndex) return HxString.substring(str, startIndex, endIndex);
+			case 'substring':   return HxString.substring.bind(str, _, _);
 			case 'substr':      return HxString.substr.bind(str);
 			case 'charCodeAt':  return HxString.charCodeAt.bind(str);
 		}