日期:2010-11-29  浏览次数:20556 次


<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>