Function to wrap the_content in a div

by

You can hook the_content filter.

paste below code in functions.php :

<?php
 add_action('the_content','ravs_content_div');
 function ravs_content_div( $content ){
  return '<div class="entry-content">'.$content.'</div>';
 }
?>

After paste this code in functions.php, the_content() print post/page content after wrap content in div with class entry-content.