Fix float to int conversion error (#188)

* Fix float to int conversion error

Fixes the following error: `Implicit conversion from float to int loses precision`

* Fix init var type to resolve implicit type conversion

Class variable was initialized as int, but then used in float arithmetic. Init type changed from int to float.

* Update `getRuntime` return value

* getQueryRuntime now always returns as `float`

---------

Co-authored-by: sebastian_kraetzig <sebastian.kraetzig@4g-server.eu>
Co-authored-by: Tim Turner <tturner@ronin-design.com>

src/Adapter/ServerQuery.php

@@ -250,11 +250,11 @@ public function getQueryCount(): int
     }
 
     /**
-     * Returns the total runtime of all queries.
+     * Returns the total runtime in microseconds of all queries.
      *
-     * @return mixed
+     * @return float
      */
-    public function getQueryRuntime(): mixed
+    public function getQueryRuntime(): float
     {
         return $this->getProfiler()->getRuntime();
     }

src/Helper/Profiler/Timer.php

@@ -40,11 +40,11 @@ class Timer
     protected bool $running = false;
 
     /**
-     * Stores the timestamp when the timer was last started.
+     * Stores the timestamp in microseconds when the timer was last started.
      *
-     * @var integer
+     * @var float
      */
-    protected int $started = 0;
+    protected float $started = 0;
 
     /**
      * Stores the timer name.
@@ -114,11 +114,11 @@ public function stop(): void
     }
 
     /**
-     * Return the timer runtime.
+     * Return the timer runtime in microseconds.
      *
-     * @return mixed
+     * @return float
      */
-    public function getRuntime(): mixed
+    public function getRuntime(): float
     {
         if ($this->isRunning()) {
             $this->stop();