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php常用hash加密函数

Jun 06, 2016 pm 08:16 PM
hash php function encryption

这篇文章主要介绍了php常用hash加密函数,以实例形式详细分析了PHP的hash加密函数用法,代码中备有详尽的注释,便于理解,需要的朋友可以参考下

本文实例讲述了php常用hash加密函数。分享给大家供大家参考。具体分析如下:

复制代码 代码如下:

$hash_list=hash_algos();  //返回注册的hash规则列表

print_r($hash_list); //显示结果

创建文件以计算哈希值:file_put_contents('example.txt', 'the quick brown fox jumped over the lazy dog.');

输出哈希值信息:

复制代码 代码如下:

echo hash_file('md5', 'example.txt');
 
$str="the quick brown fox jumped over the lazy dog.";      //定义字符串
echo hash('ripemd160',$str);           //生成哈希值
 
$ctx=hash_init('md5');          //初始化一个hash值
hash_update($ctx,'the quick brown fox');       //向哈希值灌注数据
hash_update($ctx,'jumped over the lazy dog.');      //向哈希值灌注数据
echo hash_final($ctx);          //输出最后的结果
 
$str="the quick brown fox jumped over the lazy dog.";    //定义字符串
$fp=tmpfile();            //创建一个临时文件
fwrite($fp,$str);            //将字符串写入到临时文件
rewind($fp);            //倒回文件指针的位置
$ctx=hash_init('md5');          //初始化一个hash值
hash_update_stream($ctx,$fp);         //向数据流中灌注数据
echo hash_final($ctx);          //输出结果
 
 
$str="the quick brown fox jumped over the lazy dog.";    //定义字符串
echo hash_hmac('ripemd160',$str,'secret');      //生成包含密钥的hash值
 
/*创建一个文件并将字符串写入其中*/
$file="example.txt";          //定义文件名
$str=" the quick brown fox jumped over the lazy dog.";   //定义字符串
file_put_contents($file,$str);        //向文件中写入字符串
echo hash_hmac_file('md5',$file,'secret');      //生成一个包含密钥的hash值
 
$ctx=hash_init('sha1');          //定义字符串
hash_update($ctx,'the quick brown fox jumped over the lazy dog.');  //向哈希值中灌注数据
echo hash_final($ctx);  //输出结果

希望本文所述对大家的PHP程序设计有所帮助。

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