一个人看的免费视频www,亚洲精品成人区在线观看

\r\n\r\n<\/p>\r\n<\/form>\r\n\".$_SESSION[\"authnum_session\"].\"<\/b>
\";\r\n$validate=\"\";\r\nif(isset($_POST[\"validate\"])){\r\n$validate=$_POST[\"validate\"];\r\necho \"您剛才輸入的是：\".$_POST[\"validate\"].\"
狀態(tài)：\";\r\nif($validate!=$_SESSION[\"authnum_session\"]){\r\n\/\/判斷session值與用戶輸入的驗(yàn)證碼是否一致;\r\necho \"輸入有誤<\/font>\";\r\n}else{\r\necho \"通過驗(yàn)證<\/font>\";\r\n}\r\n}\r\n?><\/pre>

The above is the entire content of this article, I hope it will be helpful to everyone Learning is helpful, and I hope everyone will support the PHP Chinese website. <\/p>\n

For more articles related to sharing a beautiful PHP verification code, please pay attention to the PHP Chinese website! <\/p>"}

亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

Home

php教程

PHP視頻

Share a beautiful php verification code class

高洛峰

Dec 30, 2016 pm 01:44 PM

php verification code

The example in this article shares a beautiful php verification code class for your reference. The specific content is as follows

//驗(yàn)證碼類
class ValidateCode {
 private $charset = &#39;abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ23456789&#39;;//隨機(jī)因子
 private $code;//驗(yàn)證碼
 private $codelen = 4;//驗(yàn)證碼長度
 private $width = 130;//寬度
 private $height = 50;//高度
 private $img;//圖形資源句柄
 private $font;//指定的字體
 private $fontsize = 20;//指定字體大小
 private $fontcolor;//指定字體顏色
 //構(gòu)造方法初始化
 public function __construct() {
 $this->font = dirname(__FILE__).&#39;/font/elephant.ttf&#39;;//注意字體路徑要寫對，否則顯示不了圖片
 }
 //生成隨機(jī)碼
 private function createCode() {
 $_len = strlen($this->charset)-1;
 for ($i=0;$i<$this->codelen;$i++) {
 $this->code .= $this->charset[mt_rand(0,$_len)];
 }
 }
 //生成背景
 private function createBg() {
 $this->img = imagecreatetruecolor($this->width, $this->height);
 $color = imagecolorallocate($this->img, mt_rand(157,255), mt_rand(157,255), mt_rand(157,255));
 imagefilledrectangle($this->img,0,$this->height,$this->width,0,$color);
 }
 //生成文字
 private function createFont() {
 $_x = $this->width / $this->codelen;
 for ($i=0;$i<$this->codelen;$i++) {
 $this->fontcolor = imagecolorallocate($this->img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156));
 imagettftext($this->img,$this->fontsize,mt_rand(-30,30),$_x*$i+mt_rand(1,5),$this->height / 1.4,$this->fontcolor,$this->font,$this->code[$i]);
 }
 }
 //生成線條、雪花
 private function createLine() {
 //線條
 for ($i=0;$i<6;$i++) {
 $color = imagecolorallocate($this->img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156));
 imageline($this->img,mt_rand(0,$this->width),mt_rand(0,$this->height),mt_rand(0,$this->width),mt_rand(0,$this->height),$color);
 }
 //雪花
 for ($i=0;$i<100;$i++) {
 $color = imagecolorallocate($this->img,mt_rand(200,255),mt_rand(200,255),mt_rand(200,255));
 imagestring($this->img,mt_rand(1,5),mt_rand(0,$this->width),mt_rand(0,$this->height),&#39;*&#39;,$color);
 }
 }
 //輸出
 private function outPut() {
 header(&#39;Content-type:image/png&#39;);
 imagepng($this->img);
 imagedestroy($this->img);
 }
 //對外生成
 public function doimg() {
 $this->createBg();
 $this->createCode();
 $this->createLine();
 $this->createFont();
 $this->outPut();
 }
 //獲取驗(yàn)證碼
 public function getCode() {
 return strtolower($this->code);
 }
}

Output example:

Usage:
1. First The verification code class is saved as a file named ValidateCode.class.php;
2. Create a new file named captcha.php to call the class;

captcha.php

session_start();
require &#39;./ValidateCode.class.php&#39;; //先把類包含進(jìn)來，實(shí)際路徑根據(jù)實(shí)際情況進(jìn)行修改。
$_vc = new ValidateCode(); //實(shí)例化一個(gè)對象
$_vc->doimg(); 
$_SESSION[&#39;authnum_session&#39;] = $_vc->getCode();//驗(yàn)證碼保存到SESSION中

3. Referenced to the page, the code is as follows:

<img  title="點(diǎn)擊刷新" src="./captcha.php" align="absbottom" onclick="this.src=&#39;captcha.php?&#39;+Math.random();"></img>

4. A complete verification page, the code is as follows:

<?php
session_start();
//在頁首先要開啟session,
//error_reporting(2047);
session_destroy();
//將session去掉，以每次都能取新的session值;
//用seesion 效果不錯(cuò)，也很方便
?>

<html>
<head>
<title>session 圖片驗(yàn)證實(shí)例</title>
<style type="text/css">
#login p{
margin-top: 15px;
line-height: 20px;
font-size: 14px;
font-weight: bold;
}
#login img{
cursor:pointer;
}
form{
margin-left:20px;
}
</style>
</head>
<body>
 
  
 
<form id="login" action="" method="post">
<p>此例為session驗(yàn)證實(shí)例</p>
<p>
<span>驗(yàn)證碼：</span>
<input type="text" name="validate" value="" size=10>
<img title="點(diǎn)擊刷新" src="./captcha.php" align="absbottom" onclick="this.src=&#39;captcha.php?&#39;+Math.random();"></img>
</p>
<p>
<input type="submit">
</p>
</form>
<?php
//打印上一個(gè)session;
//echo "上一個(gè)session：<b>".$_SESSION["authnum_session"]."</b><br>";
$validate="";
if(isset($_POST["validate"])){
$validate=$_POST["validate"];
echo "您剛才輸入的是：".$_POST["validate"]."<br>狀態(tài)：";
if($validate!=$_SESSION["authnum_session"]){
//判斷session值與用戶輸入的驗(yàn)證碼是否一致;
echo "<font color=red>輸入有誤</font>";
}else{
echo "<font color=green>通過驗(yàn)證</font>";
}
}
?>

The above is the entire content of this article, I hope it will be helpful to everyone Learning is helpful, and I hope everyone will support the PHP Chinese website.

For more articles related to sharing a beautiful PHP verification code, please pay attention to the PHP Chinese website!

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn