thinkphp自带验证码
前端页面：
<span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">style</span><span style="color: #0000ff;">="position:absolute;z-index:3;top:160px;left:180px;"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">img </span><span style="color: #ff0000;">style</span><span style="color: #0000ff;">="cursor:pointer; "</span><span style="color: #ff0000;"> src</span><span style="color: #0000ff;">="{:U('Verify')}"</span><span style="color: #ff0000;"> onclick</span><span style="color: #0000ff;">="this.src=this.src+'?'+Math.random()"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="safecode"</span><span style="color: #ff0000;"> style</span><span style="color: #0000ff;">="height:50px;width:70%;"</span><span style="color: #0000ff;">/></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span><span style="color: #000000;">//验证码判断
public function Verify(){
ob_clean();
//显示验证码
$cfg=array(
'codeSet' => '0123456789', // 验证码字符集合
'imageH' => 25, // 验证码图片高度
'imageW' => 80, // 验证码图片宽度
'length' => 4, // 验证码位数
'fontttf' => '4.ttf', // 验证码字体，不设置随机获取
'fontSize' => 10, // 验证码字体大小(px)
'useNoise' => false, // 是否添加杂点
'useCurve' => false, // 是否画混淆曲线
'bg' => array(226,229,236) //背景颜色
);
$very=new \Think\Verify($cfg);
$very->entry();
}
//客户端通过ajax，实现校验验证码
public function checkVerify(){
$code = I('get.code');
$very = new \Think\Verify();
$key = $this->auth_my_code($very,$very->seKey);
// 验证码不能为空
$secode = session($key);
//对$code进行加密，在比较校验
if($this->auth_my_code($very,strtoupper($code)) == $secode['verify_code']) {
echo json_encode(array('flag'=>1,'cont'=>'验证码正确'));
}else{
echo json_encode(array('flag'=>2,'cont'=>'验证码错误'));
}
}
private function auth_my_code($vry,$str){
$key = substr(md5($vry->seKey), 5, 8);
$str = substr(md5($str), 8, 10);
return md5($key . $str);
}</span>以上验证码如果输入错误提交后不能自动刷新，对代码进行更改后：
location.href="/Login/Login";这样只能对整个页面刷新，提交表单的值可能会丢失，非常影响用户体验。
2.如果验证码输入错误，提交后自动刷新验证码。
<span style="color: #000000;">else{
$('#safecode').attr("src","/Login/Verify?"+Math.random());
NewAlert(2,"验证码有误，请重新输入",null);
code_ok = false;
$('#verifyresult').html(msg.cont).css({'color':'red','font-size':'12px'});
}</span>3.以下为ajax提交验证码到后台校验：
<span style="color: #0000ff;"><span style="color: #800000;">script </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="text/javascript"</span><span style="color: #0000ff;">></span><span style="background-color: #f5f5f5; color: #000000;">
$(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">#login_btn</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">).click(</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(){
</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> username </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> $.trim($(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">#username</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">).val());
</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> password </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> $.trim($(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">#password</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">).val());
</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> code </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> $(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">#veri</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">).val();
</span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(username </span><span style="background-color: #f5f5f5; color: #000000;">==</span> <span style="background-color: #f5f5f5; color: #000000;">""</span><span style="background-color: #f5f5f5; color: #000000;">){
NewAlert(</span><span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">请输入用户名</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">);
shutdown();
</span><span style="background-color: #f5f5f5; color: #0000ff;">return</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
}</span><span style="background-color: #f5f5f5; color: #0000ff;">else</span> <span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(password </span><span style="background-color: #f5f5f5; color: #000000;">==</span> <span style="background-color: #f5f5f5; color: #000000;">""</span><span style="background-color: #f5f5f5; color: #000000;">){
NewAlert(</span><span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">请输入密码</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">);
shutdown();
</span><span style="background-color: #f5f5f5; color: #0000ff;">return</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
}</span><span style="background-color: #f5f5f5; color: #0000ff;">else</span> <span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(code</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">''</span><span style="background-color: #f5f5f5; color: #000000;">){
NewAlert(</span><span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">请输入验证码</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="background-color: #f5f5f5; color: #0000ff;">return</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
}
</span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">ajax去服务器端校验</span>
<span style="background-color: #f5f5f5; color: #000000;"> $.ajax({
url:</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">__CONTROLLER__/checkVerify</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,
data:{</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">code</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">:code},
dataType:</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">json</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">,
success:</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(msg){
</span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(msg.flag</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">){
</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> data</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> {
username:username,
password:password
};
$.ajax({
type:</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">POST</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,
url:</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">{:U('Login/Login')}</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,
data:data,
dataType:</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">json</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,
success:</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(msg){
</span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(msg.RespCode</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">000</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">){
shutdown();
</span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;">(msg.org_code</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">fcb</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">){
location.href</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">/Invest/index?biao_type=cwb</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">;
}</span><span style="background-color: #f5f5f5; color: #0000ff;">else</span><span style="background-color: #f5f5f5; color: #000000;">{
location.href</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">{$Think.config.VIP_URL}/Individual/index</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">;
}
}</span><span style="background-color: #f5f5f5; color: #0000ff;">else</span><span style="background-color: #f5f5f5; color: #000000;">{
NewAlert(</span><span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">,msg.RespDesc,</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="background-color: #f5f5f5; color: #0000ff;">return</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
}
},
error:</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(){
shutdown();
},
beforeSend: </span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">() {
Loading();
},
});
}</span><span style="background-color: #f5f5f5; color: #0000ff;">else</span><span style="background-color: #f5f5f5; color: #000000;">{
$(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">#safecode</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">).attr(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">src</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">/Login/Verify?</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">+</span><span style="background-color: #f5f5f5; color: #000000;">Math.random());
NewAlert(</span><span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">验证码有误，请重新输入</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">);
code_ok </span><span style="background-color: #f5f5f5; color: #000000;">=</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
$(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">#verifyresult</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">).html(msg.cont).css({</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">color</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">red</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">,</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">font-size</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">12px</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">});
}
}
});
});
</span><span style="color: #0000ff;"></span><span style="color: #800000;">script</span><span style="color: #0000ff;">></span></span>
Kaedah pemulihan data komputer Xiaomi
Cara membuat gambar bulat dalam ppt
tutorial fleksibel
Apakah maksud kappa?
Perbezaan antara versi rumah win10 dan versi profesional
Bagaimana untuk memasuki mod pemulihan pada komputer Windows 10
Penjelasan terperinci tentang konfigurasi nginx
iaitu jalan pintas tidak boleh dipadam
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
