title: Can't remove \ufeff from a string
body: <p>The app basically works like this:</p>
  
  <p>1) The user uploads a CSV file.</p>
  
  <p>2) The file is catched by PHP via POST.</p>
  
  <p>3) I open the file with <code>fopen()</code> and read the file with <code>fgetcsv()</code>.</p>
  
  <p>The first column it always have the <code>\ufeff</code> char. I know that is called UTF-8 BOM, and it's generated by Microsoft Excel. But, when I want to remove that, I can't.</p>
  
  <p>I've tried: <code>str_replace('\ufeff', '', $columns[0]);</code></p>