Detailed explanation of the steps to implement one-way hash encryption in PHP

This time I will bring you a detailed explanation of the steps to implement one-way hash encryption in PHP. What are the precautions for PHP to implement one-way hash encryption. The following is a practical case, let's take a look.

1. Encrypt files

<?php
//sha1_en.php
header("content-type:text/html;charset=utf-8");
$str = "我是张三，能给我个人数据吗";
$salt="123456";//我是唯一不变的salt
$sha1=sha1($str.$salt);//或者$sha1=md5($str.$salt);
echo $str;
echo "<br/>";
echo $sha1;
echo "<br/>";
echo "http://localhost//sha1_de.php?str=$str&sha1=$sha1";
?>

2. Decrypt files

<?php
//sha1_de.php
header("content-type:text/html;charset=utf-8");
$str=$_GET["str"];
$sha1=$_GET["sha1"];
$salt="123456";//我是唯一不变的salt
$verify=sha1($str.$salt);//或者$verify=md5($str.$salt);
echo $verify;
if($verify==$sha1){
  echo "你是张三，给你信息";
}else{
  echo "你是假冒伪劣产品";
  echo "你的ip".$_SERVER[&#39;REMOTE_ADDR&#39;]."已经被记录了";
}
?>

I believe you have mastered the method after reading the case in this article , for more exciting content, please pay attention to other related articles on the php Chinese website!

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