Today i came across this problem, how to split out / differentiate is str and is int from a random input? Example, my user can input as below:-
my current script is using substr(input,0,1) to get str and substr(input,-1) to get int, but it will give error if having input for case 2,3,4,5 or any others style of user input
Thanks
list($string, $integer) = sscanf($initialString, '%[A-Z]%d');
Use a regular expression like the following.
// $input contains the input
if (preg_match("/^([a-zA-Z]+)?([0-9]+)?$/", $input, $hits))
{
// $input had the pattern we were looking for
// $hits[1] is the letters
// $hits[2] holds the numbers
}
The expression will look for the following
^ start of line
([a-zA-Z]+)? any letter upper or lowercase
([0-9]+)? any number
$ end of line
(..+)? in this the + means "one or more" while the ? means 0 or 1 times. So you are looking for sth that is whatever long and appears or doesn't
I recommend you use a regex to identify and match String and number part: Something like
if (!preg_match("/^.*?(\w?).*?([1-9][0-9]*).*$/", $postfield, $parts)) $parts=array();
if (sizeof($parts)==2) {
//$parts[0] has string
//$parts[1] has number
}
will silently ignore invlid parts. You do still need to validate length and range of the parts.
How about this? regular expressions
$str = 'ABC12';
preg_match('/[a-z]+/i', $str, $matches1);
preg_match('/[0-9]+/', $str, $matches2);
print_r($matches1);
print_r($matches2);
