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用正则表达式判断输入的数字是否合法的例子

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Release： 2016-06-13 11:19:55
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$in="2344";
if(ereg("^(-{0,1}|+{0,1})[0-9]+(.{0,1}[0-9]+)$",$in))
    echo "Ok!";
else
    echo "Sorry,Please input again!";
?>

很简单的嘛！




Related labels：
b head html title example judgment legitimate number regular use of expression enter
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