title: printing a new line in a csv file cell
body: <p>I am generating an CSV file in php. I need to print the text in new line inside a cell(I can do this in excel using <kbd>Ctrl</kbd>+<kbd>Enter</kbd> or <kbd>Alt</kbd>+<kbd>Enter</kbd>). For that I tried using <code>'\n'</code>, <code>'\r'</code>, but nothing helped. How can I achieve this?</p>
  
  <p>I am using yii extension <a href="http://www.yiiframework.com/extension/csvexport/" rel="noreferrer">ECSVExport</a> to generate csv.</p>
  
  <p>I want an output like this:</p>
  
  <pre><code>ID  Value
  1   A
      B
  2   C
  3   E
      FF
      G
  4   X
  </code></pre>