Improve the code to be more efficient.

2/IAW/assignments/ejercicios-php/ej2.php

@@ -8,8 +8,7 @@
 <?php
 $imgs[0] = "imgs/img0.jpg";
 $imgs[1] = "imgs/img1.jpg";
-$select = rand(0, 1);
 ?>
-		<img src="<?= $imgs[$select] ?>" />
+		<img src="<?= $imgs[rand(0, 1)] ?>" />
 	</body>
 </html>