Deprecate constant redeclaration #19474
Open
+19
−14
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The wording now warns that redeclaring a constant will be an error in PHP 9, instead of a simple warning.
Should we keep the existing message and append to it, or change it to something like "Redeclaring constant %s is deprecated, this will throw an error in PHP 9"? I'm not sure what's the policy with error messages in this repo. I would say that changing the message to something more explicit is better.
RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_constant_redeclaration
Part of #19468, cc @DanielEScherzer