Array
(
    [dirname] => .
    [basename] => App.config
    [extension] => config
    [filename] => App
)
1. file=./App.config<br>
2. file=.//App.config<br>
3. file=App.config<br>
<?php // Save this file as: ./App.config ?>
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <connectionStrings>
    <add name="MMABooks" connectionString="Data Source=(LocalDB)\MSSQLLocalDB;
         AttachDBFilename=C:\C#\Database\MMABooks.mdf; 
         Integrated Security=True"/>
  </connectionStrings>
</configuration>