title: Get date format according to the locale in PHP
body: <p>There is a very simple problem. I have a locale identifier, en, en_US, cs_CZ or whatever. I just need to get the date-time format for that locale. I know I can easily format any timestamp or date object according to the locale. But I need just the <strong>string representation of the date format</strong>, let's say a regular expression. Is there any function managing this functionality? I haven't found any so far...</p>
  
  <p>Exapmle:</p>
  
  <pre><code>$locale = "en_US";
  $format = the_function_i_need($locale);
  echo $format; // prints something like "month/day/year, hour:minute"
  </code></pre>