Question

I’m new in iPhone, I want to cut a string after a special character, lets take this example
“works.php” , I want to remove “.php” from this string meaning that I want to remove what’s after “.”
what is the code to do that ??
thanks in Advance.

Answer 1

It seems you want to use -stringByDeletingPathExtension.

[@"works.php" stringByDeletingPathExtension]   // becomes @"works".

Note that this method deletes path extensions, which is not exactly the same as “remove what’s after a dot”. Please read the reference I’ve linked above for detail.

If you really just need to remove the string after the last dot, just use the conventional algorithm of (1) find the last dot (2) get a substring until the last dot:

NSString* input = @"works.php";
NSRange lastDotRange = [input rangeOfString:@"." options:NSBackwardsSearch];
if (lastDotRange.location != NSNotFound) {
    return [input substringToIndex:lastDotRange.location];
} else {
    return input;
}