Debug/Toolbar - Memory issue fix

system/Debug/Toolbar.php

@@ -109,7 +109,7 @@ public function run(float $startTime, float $totalTime, RequestInterface $reques
 			{
 				foreach ($items as $key => $value)
 				{
-					$varData[esc($key)] = is_string($value) ? esc($value) : '<pre>' . esc(print_r($value, true)) . '</pre>';
+					$varData[esc($key)] = is_string($value) ? esc($value) : '<pre>' . esc($this->processVar($value)) . '</pre>';
 				}
 			}
 
@@ -468,4 +468,34 @@ protected function format(string $data, string $format = 'html'): string
 
 		return $output;
 	}
+
+	/**
+	 * Process the varable to string for display
+	 *
+	 * @param mixed $var Variable
+	 *
+	 * @return boolean|string
+	 */
+	protected function processVar($var)
+	{
+		if (is_object($var))
+		{
+			if (is_callable([$var, 'toArray']))
+			{
+				$var = $var->toArray();
+			}
+			else
+			{
+				$var = get_class($var);
+			}
+		}
+		if (is_array($var))
+		{
+			foreach ($var as &$aVar)
+			{
+				$aVar = $this->processVar($aVar);
+			}
+		}
+		return print_r($var, true);
+	}
 }