用PHP纯手工打造会动的多帧GIF图片验证码

koill

　　效果演示: http://pcik.7di.net/pcik_reg

百度的效果演示: https://passport.baidu.com/cgi-bin/genimage?captchaservice63636236364e55367233302f31673844526b664451665a5a4d4977466974376b707a754466777934697449455561625171346c725055444b51734a35376d2b4f744b6d303238315341382b354675344c3153745869487252376169752b437450515138574972436752584f53717849726f48593258666c373574593753614f4d32703831724e51722b694a31756b67467137644c30506979496639594e504931536732687a5a505379305544554245724f76694a307247632b4f76426165663144732b595359394950413470476453787865564f6b506e674f7537637264526d716541377a384b487445624f365a4774657a58502b7347703763696d5752614171615747784e5a6c5042336634766a5049766853365974444258577968645a4f654f55

由於我水平不行,所以做不到百度那麼絢的效果,請海涵

验证码图片由PHP生成的多帧构成,所以验证码是一个真实存在的可以动的gif图
使用方法非常简单:
說明:
Gif驗證碼創建類
作者:
7di.net  QQ群:223494678
调用:
<img src="class_code.php?code=code"  style="cursor:pointer;">
验证:
IF(!isSet($_SESSION['code']) Or StrToLower($_SESSION['code'])!=StrToLower($cod)){
throw New Exception('Error:'.__LINE__.',驗證碼錯誤!');Die();
}unSet($cod,$_SESSION['code']);

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