cleanup session temp file (#2641)

* cleanup session temp file

* Fix Deprecated: Automatic conversion of false to array

tests/RedisTest.php

@@ -6185,6 +6185,7 @@ class Redis_Test extends TestSuite {
             // Use a unique ID so we can find our type keys
             $id = uniqid();
 
+            $keys = [];
             // Create some simple keys and lists
             for ($i = 0; $i < 3; $i++) {
                 $simple = "simple:{$id}:$i";

tests/SessionHelpers.php

@@ -80,7 +80,7 @@ class Runner {
     ];
 
     private $prefix = NULL;
-    private $output_file;
+    private $output_file = NULL;
     private $exit_code = -1;
     private $cmd = NULL;
     private $pid;
@@ -90,6 +90,12 @@ class Runner {
         $this->args['id'] = $this->createId();
     }
 
+    public function __destruct() {
+        if ($this->output_file) {
+            unlink($this->output_file);
+        }
+    }
+
     public function getExitCode(): int {
         return $this->exit_code;
     }
@@ -183,7 +189,6 @@ class Runner {
     }
 
     private function getTmpFileName() {
-        return '/tmp/sessiontmp.txt';
         return tempnam(sys_get_temp_dir(), 'session');
     }