$re = '/(?:(My Name is|Me) )(.*?) and (?:my (Hobby|interest) is )([^\\\\.]*)./mi';
$str = 'My Name is Casssandra and my Hobby is Cooking.
My name is Archana and my hobby is Playing.Me Adarsh and my interest is Programming.
Me Leela sharma and my interest is Baking.My name is John and my interest is Gaming.
My name is John and my interest is Singing and Dancing.';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php