support for php 8

Author: aminyazdanpanah

src/AutoReps.php

@@ -176,8 +176,8 @@ private function addRep($k_bitrate, $width, $height): Representation
     private function sortReps(array &$reps): void
     {
         usort($reps, function (Representation $rep1, Representation $rep2) {
-            $ascending = $rep1->getKiloBitrate() > $rep2->getKiloBitrate();
-            return $this->sort ? $ascending : !$ascending;
+            $ascending = $rep1->getKiloBitrate() - $rep2->getKiloBitrate();
+            return $this->sort ? $ascending : -($ascending);
         });
     }
 
@@ -239,4 +239,4 @@ public function getIterator()
 
         return new \ArrayIterator($reps);
     }
-}
+}