How can i reduce space from string?

I have a string like this
"I have a car for rent."

I need to reduce space to one like this
"I have a car for rent."

Can i do that?
By regular expression function

Thanks

From what it looks like in your post is that the strings are exactly the same.
I'm not sure what exactly you would like to accomplish

try this, i haven't

$new_string = ereg_replace( "\s+" , "\s" , "I have a car for rent" );

Not sure if PHP can represent blank spaces with "\s"

BTW is there sed equivalent in PHP

lets see, here's what i got:

chop()

this function will remove all whitespace on the right side of the string.

ltrim()

removes all whitespace on the left side of the string

trim()

removes all whitespace on the left and right side of the string