Character string replace

[Anon]

I need code for replace into string all characters in lowercase and the first character of the string in uppercase using php regular expression.
Example: string "tHIS is The TEST"
to
"This is the test"

[Anon]

Use the built in functions.

strtolower and then ucfirst.

Curious though :

What if there is a name in your string?

Example : "HeLLo tHere DonAld."

This would become : "Hello there donald." The d in donald needs to be capitalized as well.

[Anon]

ucfirst(strtolower($string))