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An exquisite verification code class in php

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An exquisite verification code class in php

<?php
//打印上一个session;
//echo "上一个session：<b>".$_SESSION["authnum_session"]."</b><br>";
$validate="";
if(isset($_POST["validate"])){
  $validate=$_POST["validate"];
  echo "您刚才输入的是：".$_POST["validate"]."<br>状态：";
  if($validate!=$_SESSION["authnum_session"]){
//判断session值与用户输入的验证码是否一致;
    echo "<font color=red>输入有误</font>";
  }else{
    echo "<font color=green>通过验证</font>";
  }
}

First create a complete verification page, and then open the session on the page first,

Remove the session, so that you can get a new session value every time;

The effect of using seesion is good, It’s also very convenient

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