本文是一个php产生随机数的两种方法实例代码(输出随机IP),感兴趣的同学参考下。 本人是asp程序员,这是首次写php程序,一点心得发上来共享 <?php $ip2id= round(rand(600000, 2550000) / 10000); //第一种方法,直接生成 $ip3id= round(rand(600000, 2550000) / 10000); $ip4id= round(rand(600000, 2550000) / 10000); //下面是第二种方法,在以下数据中随机抽取 $arr_1 = array("218","218","66","66","218","218","60","60","202","204","66","66","66","59"
本文是一个php产生随机数的两种方法实例代码(输出随机IP),感兴趣的同学参考下。
本人是asp程序员,这是首次写php程序,一点心得发上来共享
<?php
$ip2id= round(rand(600000, 2550000) / 10000); //第一种方法,直接生成
$ip3id= round(rand(600000, 2550000) / 10000);
$ip4id= round(rand(600000, 2550000) / 10000);
//下面是第二种方法,在以下数据中随机抽取
$arr_1 = array("218","218","66","66","218","218","60","60","202","204","66","66","66","59","61","60","222","221","66","59","60","60","66","218","218","62","63","64","66","66","122","211");
$randarr= mt_rand(0,count($arr_1)-1);
$ip1id = $arr_1[$randarr];
echo $ip1id;
echo ".";
echo $ip2id;
echo ".";
echo $ip3id;
echo ".";
echo $ip4id;
?>
例输出结果为 218.28.131.182
这个程序的特点是,生成的ip第一个字段时在指定范围内的,设定的几个是国内常见号段,也就是说生成的ip地址大部分是国内的
核心代码:
<?php
$arr_1 = array("http://66.249.89.99","http://66.249.89.104","http://74.125.71.105");
$randarr= mt_rand(0,count($arr_1)-1);
$gip= $arr_1[$randarr];
echo $gip."$randarr";
?>
标签: php 产生 随机数 两种 方法 实例 代码 输出 随机
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