fix floats

Author: staabm

src/Type/FloatType.php

@@ -145,6 +145,10 @@ public function toArrayKey(): Type
 
 	public function toCoercedArgumentType(bool $strictTypes): Type
 	{
+		if (!$strictTypes) {
+			return TypeCombinator::union(new IntegerType(), new FloatType(), new StringType(), new BooleanType());
+		}
+
 		return $this;
 	}
 

tests/PHPStan/Analyser/nsrt/bug-12393b.php

@@ -215,3 +215,21 @@ public function doBar(): void
 		assertType('string', $this->foo); // could be numeric-string
 	}
 }
+
+class FooFloatString
+{
+
+	public string $foo;
+
+	public function doFoo(float $b): void
+	{
+		$this->foo = $b;
+		assertType('string', $this->foo); // could be numeric-string
+	}
+
+	public function doBar(): void
+	{
+		$this->foo = 1.0;
+		assertType('string', $this->foo); // could be numeric-string
+	}
+}