Fix overriding Memcache::get() and MemcachePool::get()

Author: ondrejmirtes

resources/functionMap.php

@@ -6412,7 +6412,7 @@
 'Memcache::decrement' => ['int', 'key'=>'string', 'value='=>'int'],
 'Memcache::delete' => ['bool', 'key'=>'string', 'timeout='=>'int'],
 'Memcache::flush' => ['bool'],
-'Memcache::get' => ['string|array|false', 'key'=>'string', 'flags='=>'array', 'keys='=>'array'],
+'Memcache::get' => ['string|array|false', 'key'=>'string', '&flags='=>'array', '&keys='=>'array'],
 'Memcache::getExtendedStats' => ['array', 'type='=>'string', 'slabid='=>'int', 'limit='=>'int'],
 'Memcache::getServerStatus' => ['int', 'host'=>'string', 'port='=>'int'],
 'Memcache::getStats' => ['array', 'type='=>'string', 'slabid='=>'int', 'limit='=>'int'],
@@ -6479,7 +6479,7 @@
 'MemcachePool::decrement' => ['int', 'key'=>'string', 'value='=>'int'],
 'MemcachePool::delete' => ['bool', 'key'=>'string', 'timeout='=>'int'],
 'MemcachePool::flush' => ['bool'],
-'MemcachePool::get' => ['string|array|false', 'key'=>'string', 'flags='=>'array', 'keys='=>'array'],
+'MemcachePool::get' => ['string|array|false', 'key'=>'string', '&flags='=>'array', '&keys='=>'array'],
 'MemcachePool::getExtendedStats' => ['array', 'type='=>'string', 'slabid='=>'int', 'limit='=>'int'],
 'MemcachePool::getServerStatus' => ['int', 'host'=>'string', 'port='=>'int'],
 'MemcachePool::getStats' => ['array', 'type='=>'string', 'slabid='=>'int', 'limit='=>'int'],

src/Reflection/SignatureMap/SignatureMapParser.php

@@ -97,7 +97,7 @@ private function getParameterInfoFromName(string $parameterNameString): array
 		}
 		if (strpos($reference, '&rw') === 0) {
 			$passedByReference = PassedByReference::createReadsArgument();
-		} elseif (strpos($reference, '&w') === 0) {
+		} elseif (strpos($reference, '&w') === 0 || strpos($reference, '&') === 0) {
 			$passedByReference = PassedByReference::createCreatesNewVariable();
 		} else {
 			$passedByReference = PassedByReference::createNo();

tests/PHPStan/Rules/Methods/MethodSignatureRuleTest.php

@@ -351,4 +351,15 @@ public function testBug4854(): void
 		$this->analyse([__DIR__ . '/data/bug-4854.php'], []);
 	}
 
+	public function testMemcachePoolGet(): void
+	{
+		if (!self::$useStaticReflectionProvider) {
+			$this->markTestSkipped('Test requires static reflection.');
+		}
+
+		$this->reportMaybes = true;
+		$this->reportStatic = true;
+		$this->analyse([__DIR__ . '/data/memcache-pool-get.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Methods/data/memcache-pool-get.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace MemcachePoolGet;
+
+class CacheShim extends \MemcachePool
+{
+
+	public function get($arg, &$flags = null, &$cas = null)
+	{
+		return false;
+	}
+
+}