Add exams from exam156 to exam199

exam187/customEx.php

@@ -0,0 +1,27 @@
+<?php 
+// Ovo mi ne radi ne znam iz kog razloga uvek baci error kad pogresim umesto da ispise poruku.
+$mysql_db = 'example_database';
+$mysql_host = 'localhosta';
+$mysql_user = 'example_user';
+$mysql_pass = 'Kolosnjaj4321!';
+
+class DatabaseException extends Exception{}
+class ServerException extends Exception{}
+
+try{
+    if(!$con = mysqli_connect($mysql_host,$mysql_user,$mysql_pass)){
+        throw new ServerException('Could not connect to server.');
+    } else if (!mysqli_select_db($con,$mysql_db)) {
+        throw new DatabaseException('Could not select database.');
+    } else {
+        echo 'Connected';
+    }
+
+} catch (ServerException $ex) {
+    echo 'Error: ' . $ex->getMessage();
+} catch (DatabaseException $ex) {
+    echo 'Error: ' . $ex->getMessage();
+}
+
+
+?>