3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/\w+(__)\w+/i', '.', 'aluno_pobre__casado__novata'); $patterns = array ('/(19|20)(\d{2})-(\d{1,2})-(\d{1,2})/', '/^\s*{(\w+)}\s*=/'); $replace = array ('\3/\4/\1\2', '$\1 ='); echo preg_replace($patterns, $replace, '{startDate} = 1999-5-27'); ?>
based on WOHGN
Output for 4.3.0 - 7.2.0
.$startDate = 5/27/1999