Differences

This shows you the differences between two versions of the page.

--- rfc:deprecate-backtick-operator [2018/02/11 19:45] – wesnetmo
+++ rfc:deprecate-backtick-operator [2018/02/11 20:59] (current) – wesnetmo
@@ Line 9: / Line 9: @@
 ===== Introduction =====
-The backtick operator (''`dir D:\foo`'') is used to execute commands via shell. The same functionality is also available as ''shell_exec()''.
+The backtick operator (''`dir D:\foo`'') is used to execute commands via shell.
+The same functionality is also available as ''shell_exec()''.
 ===== Proposal =====
-This RFC proposes to deprecate it in PHP 7.3 and suggest to use ''shell_exec()'' instead, in case PHP decided in future to use backtick enclosed strings for Unicode strings.
+This RFC proposes to deprecate (by triggering one among E_DEPRECATED, E_STRICT or E_NOTICE) it in PHP 7.3 and suggest to use ''shell_exec()'' instead:
+  * in case PHP decided in future to use backtick enclosed strings for Unicode strings
+  * because it is a shady way to execute a rare and dangerous operation
+  * because it is weirdly specific to a rare operation; regexp literals, xml-strings literals are way more common use cases, but they don't have a specific string literal
 ===== Backward Incompatible Changes =====
-None.
+None, the feature will continue to work until it is removed in future PHP versions, but a notice will be emitted.
 ===== Proposed PHP Version: =====