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How to hide the last two digits of the IP address in php and replace the middle digits of the mobile phone number with *
How to hide the last two digits of the IP address in php and replace the middle digits of the mobile phone number with *
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有时我们需要在php代码中，隐藏IP地址的后两位，及替换手机号码中间数字为*号，以保密相关数据，本文为大家介绍了几种实现方法，有兴趣的朋友，不妨参考下。
1、隐藏IP后两位的方法。
<?php
/**
* 隐藏IP后两位
* by 程序员之家 http://bbs.it-home.org
*/
function ip2unkonw($ip)
{
$add = explode('.', $ip, 4);
return $add[0]. '.'. $add[1]. '.*.*';
}
?>Copy after login 2、 php正则格式化IP地址，隐藏后一位。
<?php
//隐藏后一位
return preg_replace('/(\d+)\.(\d+)\.(\d+)\.(\d+)/is',"$1.$2.$3.*",$ip);
//隐藏IP最后几位为*
echo ereg_replace("[^\.]{1,3}$","*",$ip);
?>Copy after login 3、php替换手机号中间数字为*号
<?php
//隐藏手机号部分数字
$string = "13811111100";
$pattern = "/(1\d{1,2})\d\d(\d{0,3})/";
$replacement = "\$1****\$3";
print preg_replace($pattern, $replacement, $string);
?>Copy after login 4、php实现隐藏Ip地址最后一段或者最后两段的方法
<?
//--隐藏IP后几位
//by 程序员之家 bbs.it-home.org
$ip='127.0.0.1';
$reg1='/((?:\d+\.){3})\d+/';
$reg2='~(\d+)\.(\d+)\.(\d+)\.(\d+)~';
echo preg_replace($reg1,"\\1*",$ip);//以上输出结果为：127.0.0.*
echo "------------------<br/>";
echo preg_replace($reg2,"$1.$2.*.*",$ip);//以上输出结果为：127.0.*.*
?>Copy after login |
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