title: PHP equivalent for javascript escape/unescape
body: <p>Let's say I have a string: <strong>something</strong></p>
  
  <p>When I escape it in JS I get this: <strong>%73%6F%6D%65%74%68%69%6E%67</strong></p>
  
  <p>so I can use this code in JS to decode it:</p>
  
  <pre><code> document.write(unescape('%73%6F%6D%65%74%68%69%6E%67'));
  </code></pre>
  
  <p>I need the escape function in PHP which will do the same (will encode <strong>something</strong> to : <strong>%73%6F%6D%65%74%68%69%6E%67</strong>) </p>
  
  <p>How to do that ?</p>