Allow set persistent connection via config

Author: natanfelles

src/Database.php

@@ -121,6 +121,7 @@ protected function makeConfig(array $config) : array
             'password' => null,
             'schema' => null,
             'socket' => null,
+            'persistent' => false,
             'engine' => 'InnoDB',
             'charset' => 'utf8mb4',
             'collation' => 'utf8mb4_general_ci',
@@ -196,7 +197,7 @@ protected function connect(
                 }
             }
             $this->mysqli->real_connect(
-                $config['host'],
+                ($config['persistent'] ? 'p:' : '') . $config['host'],
                 $config['username'],
                 $config['password'],
                 $config['schema'],

tests/DatabaseTest.php

@@ -55,6 +55,19 @@ public function testConnectionWithArray() : void
         self::assertInstanceOf(Database::class, $database);
     }
 
+    public function testPersistentConnection() : void
+    {
+        $database = new Database([
+            'username' => \getenv('DB_USERNAME'),
+            'password' => \getenv('DB_PASSWORD'),
+            'schema' => \getenv('DB_SCHEMA'),
+            'host' => \getenv('DB_HOST'),
+            'port' => \getenv('DB_PORT'),
+            'persistent' => true,
+        ]);
+        self::assertInstanceOf(Database::class, $database);
+    }
+
     public function testConnectionFail() : void
     {
         $this->expectException(mysqli_sql_exception::class);