How do you cut off text after a certain amount of characters in PHP?

Question

I have two string that i want to limit to lets say the first 25 characters for example. Is there a way to cut off text after the 25th character and add a ... to the end of the s

Answer 1

http://php.net/manual/en/function.mb-strimwidth.php (PHP 4 >= 4.0.6, PHP 5, PHP 7)

";
echo mb_strimwidth("Hello", 0, 10, "...");
?>

output:

Hello W...
Hello