/(/([\d]{2,10}[\w][/s])|([\w][\d]{2,10}[/s])|([\w][\d]{2,10}[\w][/s])|[\d]{2,10}[\w]|([\w][\d]{2,10})|([\w][\d]{2,10}[\w])/

or would I have to specify without white spaces too? This epxression could get really long depending on how complicated your requirements are, yes?
Thx

Try this link first...

id say skip regular expressions as if your strin gis actually very long, its going to be quite a big expression. Also, you will not be able to count how many of the entered digits are numbers. Unless, you specify to the user where they need to put the numbers that is at the start or at the end, or something, regular wont do such a good job. Stick with a for loop and try to just count the number of occurances of numbers to be more than two. that should be sufficient to suit your need.