PHP 验证IP的合法性

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PHP 验证IP的合法性

php验证IP的合法性! function get_ip(){ //判断服务器是否允许$_SERVER if(isset($_SERVER)){ if(isset($_SERVER[HTTP_X_FORWARDED_FOR])){ $realip = $_SERVER[HTTP_X_FORWARDED_FOR]; }elseif(isset($_SERVER[HTTP_CLIENT_IP])) { $realip = $_SERVER[HTTP_CLIENT_IP]; }else{ $reali…

C# 验证IP是否正确简易方法源代码

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace 验证IP合法性 { public partial c…

javascript正则表达式验证IP，URL

验证IP function isIP(ipstr){ var reg = /^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/g; return ipstr.match(reg); } 这个url的正则验证比较全面,它验证的情况包括IP,域名(domain),ftp,二级域名…

shell 检测ip的合法性与检测网络掩码的合法性

有时我们需要检测IP输入的正确性与网络掩码的正确性,用shell脚本写的: #验证ip地址的正确性 check_ip_format() { echo $1 | grep "^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$" > /dev/null if [ $? = 1 ]; then return 1 else a=`echo $1 | awk -F. '{print $1}'` b=`echo $1 | awk…

JS验证身份证的合法性

//验证身份证的合法性 function IdentityCodeValid(code) { var city={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江 ",31:"上海",32:"江苏",33:"浙江&quo…

IOS开发中怎样验证邮箱的合法性

IOS开发中怎样验证邮箱的合法性文章参考:http://www.codes51.com/article/detail_94157.html 代码: - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.title=@"验证邮箱的合法性"; NSString *email=@"123456@codes51.com"; NSL…

C#验证ip地址的代码

如下的代码是关于C#验证ip地址的代码. public Boolean CheckIPValid(String strIP) { char chrFullStop = '.'; string[] arrOctets = strIP.Split(chrFullStop); if (arrOctets.Length != 4) { return false; } Int16 MAXVALUE = 255; foreach (String strOctet in arrOctets) { if (st…