note 129913 added to language.types.value

While null is often treated as a special value in PHP, it is not officially listed as a "value type" in the same way as false and true are in PHP 8+ versions. But null can still be used in types, particularly as part of union types, but it is not itself defined as a value type according to the official PHP documentation. EXPLANATION: Value types in PHP not only check the type of a value but also the value itself. PHP supports two value types introduced in specific versions: false as of PHP 8.0.0 true as of PHP 8.2.0 CONCLUSION: Prior to PHP 8.2.0, false could only be used as part of a union type, not as a standalone type. Regarding null, null remains a special value and can be part of union types but null is not considered a value type like false and true in this context. ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.137 (proxied: 193.49.48.244) ---- Manual Page -- https://php.net/manual/en/language.types.value.php Edit -- https://main.php.net/note/edit/129913 Del: integrated -- https://main.php.net/note/delete/129913/integrated Del: useless -- https://main.php.net/note/delete/129913/useless Del: bad code -- https://main.php.net/note/delete/129913/bad+code Del: spam -- https://main.php.net/note/delete/129913/spam Del: non-english -- https://main.php.net/note/delete/129913/non-english Del: in docs -- https://main.php.net/note/delete/129913/in+docs Del: other reasons-- https://main.php.net/note/delete/129913 Reject -- https://main.php.net/note/reject/129913 Search -- https://main.php.net/manage/user-notes.php