PHP中如何将ip地址转成十进制数
PHP 中如何将ip地址转成十进制数呢?现在PHP中有很多时候都会用到ip地址,但是这个ip地址获取的时候都不是10进制的。那么PHP中如何将ip地址转成十进制数就是我们比较头疼的事情了,下面两种方法是我整理处理来相对比较简单的IP地址转成十进制数的方法。希望能对大家有所帮助。
方法一:
代码如下
public function ipToLong(){
$ip = $_SERVER['REMOTE_ADDR'];
$ip = explode('.', $ip);
$ip = array_reverse($ip);//数组反转
$r = 0;
for($i=0,$j=count($ip); $i
$r += $ip[$i] * pow(256, $i);
}
$r = sprintf("%u", $r);
echo $r;
}
方法二:
代码如下
public function ipToLong(){
$ip = $_SERVER['REMOTE_ADDR'];
$ip = explode('.',$ip);
$r = ($ip[0]
if($r
echo $r ;
}
两个结果在本地服务器中的结果都是3232235877,运用的ip是192.168.1.101。我们用ping 192.168.1.101 和 ping 3232235877来进行检测,看是否一样。
可能有些朋友不知道mysql与php中都提供了IP转换十进制数函数
MySQL 提供了INET_ATON 和 INET_NTOA 两个函数来进行地址和整数之间的转换。
1. IP 由点分格式,转换为数字格式。
代码如下
mysql> select inet_aton('127.0.0.1');
+------------------------+
| inet_aton('127.0.0.1') |
+------------------------+
| 2130706433 |
+------------------------+
1 row in set (0.00 sec)
2. IP 由数字格式转换为点分格式。
代码如下
mysql> select inet_ntoa(2130706433);
+-----------------------+
| inet_ntoa(2130706433) |
+-----------------------+
| 127.0.0.1 |
+-----------------------+
1 row in set (0.00 sec)
php可直接使用ip2long函数
代码如下
echo ip2long('192.168.1.38');
输出:3232235814

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