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用正则表达式判断输入的数字是否合法的例子_PHP

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Release： 2016-06-01 12:32:57
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正则表达式



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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：
echo in example judgment legitimate number enter
source：php.cn
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