title: TCPDF writeHTMLCell new line issue
body: <p>Okay, so I'm really struggling to understand why trying to get a new line from a HTML source to display as a new line in the PDF generated by TCPDF won't work.</p>
  <p>Before anyone says that it's because the line breaks are HTML elements, I'm already trying to replace the variable using str_replace.</p>
  <p>Here's a snippet from the code:</p>
  <p><strong>Code</strong></p>
  <pre><code>$needles = array(&quot;&lt;br&gt;&quot;, &quot;&lt;br /&gt;&quot;, &quot;&lt;br/&gt;&quot;, &quot;\n&quot;);
  $replacement = &quot;&amp;#13;&quot;;
  $p_long_desc = str_replace($needles, $replacement, $p_long_desc);
  </code></pre>
  <p>An example of $p_long_desc could be something like the below:</p>
  <blockquote>
  <p>&quot;Hello World,</p>
  <p>My name is</p>
  <p>Joe&quot;</p>
  </blockquote>
  <pre><code>$pdf-&gt;SetFont('myriadpro', '', 9);//set font        
  $pdf-&gt;SetTextColor(0, 0, 0); //font colour      
  $p_long_desc.= &quot; &lt;a href=\&quot;$p_web_address\&quot;&gt;Read More&lt;/a&gt;&quot;; 
  $pdf-&gt;writeHTMLCell(179.334, 16.933, $x+15.167, $y+123.114,$p_long_desc,0,0,false,true,'',true);
  </code></pre>
  <p>($p_web_address is being parsed from an external source)</p>
  <p>Why then, when I output my PDF, I don't see the new lines as they should be?</p>