Add PCRE_VERSION predefined constant

Refs phpstan/phpstan#11202

Author: curry684

src/Analyser/ConstantResolver.php

@@ -278,6 +278,15 @@ public function resolvePredefinedConstant(string $resolvedConstantName): ?Type
 		if ($resolvedConstantName === 'OPENSSL_VERSION_NUMBER') {
 			return IntegerRangeType::fromInterval(1, null);
 		}
+
+		// pcre, https://www.php.net/manual/en/pcre.constants.php
+		if ($resolvedConstantName === 'PCRE_VERSION') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+
 		if (in_array($resolvedConstantName, ['STDIN', 'STDOUT', 'STDERR'], true)) {
 			return new ResourceType();
 		}

tests/PHPStan/Analyser/nsrt/predefined-constants.php

@@ -71,6 +71,9 @@
 // openssl, https://www.php.net/manual/en/openssl.constants.php
 assertType('int<1, max>', OPENSSL_VERSION_NUMBER);
 
+// pcre, https://www.php.net/manual/en/pcre.constants.php
+assertType('non-falsy-string', PCRE_VERSION);
+
 // other
 assertType('bool', ZEND_DEBUG_BUILD);
 assertType('bool', ZEND_THREAD_SAFE);