Checking if a string contains an integer

Question

Do you know of a function that can check if a string contains an integer?

Here\'s how I\'d expect it to work:

holds_int(\"23\") // should return true         


        

Answer 1

Maybe this will also help in given situation there is a function in php that already does this, its called "is_numeric()" it will return true or false accordenly..

   if(is_numeric($somestring) == True){
        echo "this string contains a integar";
    }

link: http://www.php.net/is_numeric

you said "holdsint("2") should return true, well is_numeric("2") returns True, and is_numeric("a") False, as expected, this function exists in php, no need to rewrite.