PHP: How do I only echo half a string?

[Question Everything!]

is this the best way?:

echo substr($password,0,6);
I have a $password and i want to only show the first half of $password and after it have '...' How is this done in php?

 

[EFG]

$password = "Hello there"
$halflen = float(strlen($password)/2);
$shortpw = substr($password, 0 , $halflen)."...";
echo $shortpw;