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--- rfc:class-like_primitive_types [2016/12/19 22:00] – ajf
+++ rfc:class-like_primitive_types [2016/12/19 22:04] – ajf
@@ Line 117: / Line 117: @@
 ===== Backward Incompatible Changes =====
-In order to support the <php>instanceof resource</php> syntax, <php>resource</php> must be added to the list of reserved names that cannot be used by classes, interfaces or traits. Otherwise, there would be an ambiguity as to whether this referred to a hypothetical class with the same name, or to the type. This backwards-compatibility break could be avoided by removing support for the resource type (see the Open Issues section).
 **FIXME**
@@ Line 161: / Line 159: @@
 Resource is a legacy type that could be wholly replaced by objects in future. Extending these features to this type would be further entrenching it and contrary to the goal of its eventual removal.
-Beyond that, supporting <php>instanceof resource</php> would require adding ''resource'' to the list of reserved class names (the other types are already on it), and therefore entail a backwards-compatibility break. Omitting support for resources would avoid this backwards-compatibility break.
+In particular, <php>instanceof resource</php> could create future backwards-compatibility problems if code uses it to check for values being resources and they later become objects.
 ===== Unaffected PHP Functionality =====