title: How can I use a new-line character within a tooltip title html attribute inside a single-quoted echo in PHP?
body: <p>Here's my echo:</p>
  
  <pre><code>echo '
      &lt;div class="col-md-6 info" id="outerDiv"&gt;
          &lt;div class="row"&gt;
              &lt;strong&gt;
                  &lt;a href="#" data-toggle="tooltip" title="'.
                      $estado-&gt;dados($value[$c]-&gt;estado)-&gt;sigla.
                      ': '.
                      $cidade-&gt;dados($value[$c]-&gt;cidade)-&gt;nome.
                      fwrite("\n").$value[$c]-&gt;tel1.
                      '" id="title'.$c.'"&gt;'.$value[$c]-&gt;nome_fantasia.'&lt;/a&gt;
              &lt;/strong&gt;
                  &lt;div id="content'.$c.'" hidden&gt;
                      &lt;div class="row-fluid"&gt;
                          &lt;div class="col-md-12"&gt;
                              &lt;ul class="list-group"&gt;
                                  &lt;li class="list-group-item"&gt;Razão Social: '.$value[$c]-&gt;razao_social.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;CNPJ: '.$value[$c]-&gt;cnpj.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Endereço: '.$value[$c]-&gt;endereco.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Número: '.$value[$c]-&gt;numero.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Complemento: '.$value[$c]-&gt;complemento.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Bairro: '.$value[$c]-&gt;bairro.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Tel1: '.$value[$c]-&gt;tel1.'&lt;/li&gt;
                                  &lt;li class="list-group-item"&gt;Tel2: '.$value[$c]-&gt;tel2.'&lt;/li&gt;
                              &lt;/ul&gt;
                          &lt;/div&gt;
                      &lt;/div&gt;
                  &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      '
  </code></pre>
  
  <p>I've tried to use fwrite("\n"), but it does not work. I really wanted a new-line character inside that tooltip. Is there a cure?</p>