title: fopen() failed to open stream : no such file or directory
body: <p>I have <code>mypage.php</code> where I try to <code>fopen</code> a file, but I get:</p>
  
  <p><code>Warning: fopen(/json/subcat/list.json): failed to open stream: No such file or directory</code></p>
  
  <p>This is how I try to open file: <code>$json = fopen("/json/subcat/list.json", "r");</code>
  This is the tree of project: </p>
  
  <p><img src="https://i.imgur.com/c97o1CX.jpg"/></p>
  
  <p>P.S.: I use <code>xampp</code> and <code>root</code> is <code>.../htdocs/projectName/</code> and 
  <code>list.json</code> contains <code>{"list": ["a", "b"]}</code>, if matter.</p>