title: What does the regex pattern 'pL' do?
body: <p>There is a common Regex used to slugify urls <code>~[^\\pL\d]+~u</code> but what does the<code>\\pL</code> in the first <code>preg_replace()</code> mean?</p>
  
  <p>Here are some examples:</p>
  
  <ul>
  <li><a href="https://stackoverflow.com/questions/10577041/how-can-i-replace-with-in-slugify-function">How can I  replace &quot;:&quot; with &quot;/&quot; in slugify function?</a></li>
  <li><a href="http://snipplr.com/view/22741/slugify-a-string-in-php/" rel="nofollow noreferrer">http://snipplr.com/view/22741/slugify-a-string-in-php/</a></li>
  <li><a href="http://sourcecookbook.com/en/recipes/8/function-to-slugify-strings-in-php" rel="nofollow noreferrer">http://sourcecookbook.com/en/recipes/8/function-to-slugify-strings-in-php</a></li>
  <li><a href="http://www.daniweb.com/web-development/php/threads/471380/php-slugify-two-variables-together" rel="nofollow noreferrer">http://www.daniweb.com/web-development/php/threads/471380/php-slugify-two-variables-together</a></li>
  </ul>