I use ^ -? \ d + (\ \ d +) * $validate input Numbers, the result - 9 through validation, PHP does not, consult

CodePudding user response:

The capture and the source of the specific walks into my blog,,, http://www.sxb.pw/786.html

CodePudding user response:

^ (\) {0, 1} \ d + (. \ \ d +) ${0, 1}