title: PHP: \n \r \t won't work on double qoutes
body: <p>Using PHP 5.6.2 on MAMP PRO and trying to echo this string of characters: </p>
  
  <pre><code>echo " \" \n \r \t \\ \$ ";
  </code></pre>
  
  <p>The output that I get is: </p>
  
  <pre><code>" \ $
  </code></pre>
  
  <p>So escape sequences such as \n \t \r are neglected. I don't know if there's something wrong with php.ini because it has been working fine before. </p>
  
  <p>I would really appreciate if anyone could help me to fix this.</p>