TP中的验证码简单了很多，少去了原来比较繁琐的操作，下面带大家看看验证码实例！
yzm1.html前台模板
???????<form action="" method="post"> ???????<input type="text" name="code" id=""> ???????<img src="{:U(‘yzm‘)}" alt=""> ???????<input type="submit" value="提交"> ???</form> ???控制器页面
<?phpnamespace Home\Controller;use Think\Controller;class UserController extends Controller { ???public function index(){ ?????echo "index"; ???} ???public function yzm(){ ???// ????$Verify = new \Think\Verify(); ???// ????//设置字体大小 ???// ????$Verify->fontSize = 30; ???// ????//使用背景图片 ???// ????$Verify->useImgBg=true; ???// ????//是否有干扰线 ???// ????$Verify->useCurve=false; ???// ????//是否使用小点 ???// ????$Verify->useNoise=true; ???// ????//验证码宽度 ?????????// $Verify->imageW=500; ???// ????//验证码宽度 ???// ????$Verify->imageH=200; ???// ????//验证码位数 ???// ????$Verify->length=3; ???// ????//设置干扰颜色 ???// ????$Verify->bg=array(255,0,0); ???// ????//设置验证码字符集合 ???// ????//$Verify->codeSet="123456789"; ???// ????//设置字段 ???// ????$Verify->fontttf="simkai.ttf"; ???// ????//设置字体 ???// ????$Verify->zhSet="我爱你"; ???// ????//使用中文验证码 ???// ????$Verify->useZh=true; ???// ????$Verify->entry(); ???????$Verify = new \Think\Verify(); ???$Verify->fonotttf = "simkai.ttf"; ????????$Verify->zhSet="我爱你中国"; ???$Verify->length=3; ???$Verify->useZh = true; ???$Verify->entry(); ???????} ??function check_verify($code, $id = ‘‘){ ???????$verify = new \Think\Verify(); ???????return $verify->check($code, $id); ???}
???public function yzm1(){ ???????if (IS_POST) { ???????????# code... ???????????// echo "<pre>"; ???????????// print_r($_SESSION); ???????????// echo "</pre>"; ???????????????//传递用户的值进行检测 ???????????if ($this->check_verify($_POST[‘code‘])) { ???????????????echo "1"; ???????????}else{ ???????????????echo "2"; ???????????} ???????}else{ ???????$this->display(); ???????} ???}}注意：中文验证码，必须要放入字体路径为Thinkphp/Verify/zhttfs
效果图
验证码正确 echo 1；
验证码错误echo 2；
thinkphp验证码
原文地址：http://www.cnblogs.com/healy/p/7522244.html