[RFC] Deprecate type juggling to and from bool type within the function type juggling context

From: Date: Mon, 02 Jun 2025 16:11:06 +0000
Subject: [RFC] Deprecate type juggling to and from bool type within the function type juggling context
Groups: php.internals 
Request: Send a blank email to internals+get-127534@lists.php.net to get a copy of this message 
Hello internals,

This is the first RFC out of a set of type system related RFCs I want to propose for PHP 8.5.
It also used the recently enabled Markdown support on the wiki, so there might be a few oddities.

The RFC proposes to deprecate implicit type coercions to and from the bool type for other scalar
types.
This a "weak" mode change only, as when strict_types are enabled none of these coercions
can happen.

Let me know what you think about it.

RFC: https://wiki.php.net/rfc/deprecate-function-bool-type-juggling

Best regards,

Gina P. Banyard

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