Merge branch '17-setwsrepsyncwait' into 'master'

Resolve "setWsrepSyncWait"

Closes #17

See merge request !31

composer.json

 {
     "name": "timmit/db-mysql",
     "description": "A simple DB layer in PHP for using MySQL(i)",
-    "version": "v4.1.1",
+    "version": "v4.2.0",
     "keywords": ["DB", "MySQL", "MySQLi", "database", "DB layer", "database layer"],
     "license": "MIT",
     "homepage": "http://www.TiMMiT.nl/",
@@ -13,7 +13,7 @@
         }
     ],
     "require": {
-        "php": ">=7.0.0"
+        "php": ">=7.2.0"
     },
     "minimum-stability": "dev",
     "autoload": {

src/TiMMiT/MySQL/DB.php

@@ -2,7 +2,7 @@
 /**
  * A very simple class for using MySQL.
  *
- * PHP version 5.3+
+ * PHP version 7.2+
  *
  * @package TiMMiT/DB-MySQL
  * @author  Tim Schoondergang <tim.schoondergang@TiMMiT.nl>
@@ -167,7 +167,7 @@ namespace TiMMiT\MySQL;
 			}
 			if (self::$writeActive && self::ping(true)) {
 				mysqli_set_charset(self::$mlinkWrite,self::$charset);
-				mysqli_query(self::$mlink,"SET SESSION wsrep_sync_wait = 1;");
+				DB::setWsrepSyncWait(true);
 			}
 		}
 
@@ -897,6 +897,20 @@ namespace TiMMiT\MySQL;
 			self::executeQuery("SET foreign_key_checks=1;");
 		}
 
+		/**
+		 * setWsrepSyncWait
+		 * @param bool $on
+		 * @return void
+		 */
+		public static function setWsrepSyncWait(bool $on=true): void
+		{
+			if($on){
+				mysqli_query(self::$mlink,"SET SESSION wsrep_sync_wait = 1;");
+			} else {
+				mysqli_query(self::$mlink,"SET SESSION wsrep_sync_wait = 0;");
+			}
+		}
+
 		/**
 		 * add item tot stats
 		 * @param string $queryType Soort Query