✅ [] syntax (destructuring of arrays) was available from PHP 7.1

https://github.com/gongo/merciful-polluter/actions/runs/6019488668/job/16329391114?pr=21

test/SessionTest.php

@@ -50,7 +50,7 @@ public function testPolluteSessionNotStarted()
         $this->object = new Session;
         $this->object->pollute();
 
-        [$errno, $errstr, $args] = $errored;
+        list($errno, $errstr, $args) = $errored;
         $this->assertEquals(E_USER_WARNING, $errno);
         $this->assertEquals('The session not yet started (Ignoring)', $errstr);
     }