没有公告
<html> <head> <title>Untitled</title> </head> <body> <?php $in="2344"; if(ereg("^(-{0,1}|\ {0,1})[0-9] (\.{0,1}[0-9] )$",$in)) echo "Ok!"; else echo "Sorry,Please input again!"; ?> <br>很简单的嘛! </body> </html>