support encapsed strings (#433)

Author: staabm

src/QueryReflection/QueryReflection.php

@@ -8,6 +8,8 @@
 use PhpParser\Node\Expr\BinaryOp\Concat;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Name;
+use PhpParser\Node\Scalar\Encapsed;
+use PhpParser\Node\Scalar\EncapsedStringPart;
 use PHPStan\Analyser\Scope;
 use PHPStan\ShouldNotHappenException;
 use PHPStan\Type\Constant\ConstantArrayType;
@@ -231,6 +233,19 @@ private function resolveQueryStringExpr(Expr $queryExpr, Scope $scope): ?string
             return $leftString.$rightString;
         }
 
+        if ($queryExpr instanceof Encapsed) {
+            $string = '';
+            foreach ($queryExpr->parts as $part) {
+                $string .= $this->resolveQueryStringExpr($part, $scope);
+            }
+
+            return $string;
+        }
+
+        if ($queryExpr instanceof EncapsedStringPart) {
+            return $queryExpr->value;
+        }
+
         $type = $scope->getType($queryExpr);
 
         return QuerySimulation::simulateParamValueType($type, false);

tests/default/data/pdo.php

@@ -212,4 +212,16 @@ public function mixInUnionParam(PDO $pdo, $adaid, $gesperrt)
         $stmt = $pdo->query("SELECT email, adaid FROM ada WHERE gesperrt = '".$gesperrt."'", PDO::FETCH_ASSOC);
         assertType('PDOStatement<array{email: string, adaid: int<-32768, 32767>}>', $stmt);
     }
+
+    public function queryEncapsedString(PDO $pdo, int $adaid)
+    {
+        $stmt = $pdo->query("SELECT email, adaid FROM ada WHERE adaid=$adaid", PDO::FETCH_ASSOC);
+        assertType('PDOStatement<array{email: string, adaid: int<-32768, 32767>}>', $stmt);
+
+        $fn = function (): int {
+            return self::INT;
+        };
+        $stmt = $pdo->query("SELECT email, adaid FROM ada WHERE adaid={$fn()}", PDO::FETCH_ASSOC);
+        assertType('PDOStatement<array{email: string, adaid: int<-32768, 32767>}>', $stmt);
+    }
 }