Get substring before a specified substring

Question

$title = 'the.test.hd.part12';

I need to keep the characters up until it finds the word "part".

Should return - the.test.hd.

Answer 1

For users on PHP Version < 5.3.0:

echo substr($title, 0, strpos($title, $needle));

Answer 2

echo current(explode('part12',$title));

Answer 3

echo strstr($title, 'part', true); // As of PHP 5.3.0