尊龙凯时人生就是搏

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ÑéÖ¤Â루ӢÎÄÈ«³Æ£ºCompletely Automated Public Turing test to tell Computers and Humans Apart£©ÊÇÒ»ÖÖ×Ô¶¯Çø·ÖÅÌËã»ú³ÌÐòºÍÈËÀàÓû§µÄ¹«¹²È«×Ô¶¯·´ÏòͼÁé²âÊÔ£¬Ò²¾ÍÊÇÓÃÀ´Çø·ÖÓû§ÊÇ»úÐÃ÷ÈÕÕ¾ÉÈ˵ÄÒ»ÖÖÊÖÒÕ ¡£ÑéÖ¤ÂëµÄÓ¦ÓÃÊ®·ÖÆձ飬°üÀ¨µ«²»ÏÞÓÚ×¢²á¡¢µÇ¼¡¢Ì¸ÂÛ¡¢ËÑË÷¡¢Í¶Æ±¡¢ÅÀ³æµÈ³¡¾°£¬ÔÚ»¥ÁªÍøµÄÇå¾²°ü¹ÜÖÐÆðµ½ÁËÖÁ¹ØÖ÷ÒªµÄ×÷Óà ¡£

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×°ÖÃthinkcaptcha

Ê×ÏÈ£¬ÎÒÃÇÐèÒªÔÚthinkphpÖÐ×°ÖÃthinkcaptchaÀ©Õ¹°ü£¬¿ÉÒÔͨ¹ýÒÔÏÂÏÂÁî×°Öãºcomposer require topthink/think-captcha

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ÉèÖÃconfig.phpÎļþ

ÔÚapplicationÎļþ¼ÐÏ£¬ÕÒµ½config.phpÎļþ£¬·­¿ªºó¿ÉÒÔ¿´µ½ÈçÏ´úÂ룺

//ÑéÖ¤Âë
'captcha' => [
    // ÑéÖ¤Âë×Ö·ûÜöÝÍ
    'codeSet' => '2345678abcdefhijkmnpqrstuvwxyzABCDEFGHJKLMNPQRTUVWXY',
    // ÑéÖ¤Âë×ÖÌå¾Þϸ(px)£¬Æ¾Ö¤ËùÐè¾ÙÐÐÉèÖÃÑéÖ¤Âë×ÖÌå¾Þϸ
    'fontSize' => 25,
    // ÊÇ·ñ»­»ìÏýÇúÏß
    'useCurve' => true,
    // ÑéÖ¤ÂëͼƬ¸ß¶È£¬Æ¾Ö¤ËùÐè¾ÙÐÐÉèÖÃÑéÖ¤ÂëͼƬ¸ß¶È
    'imageH' => 50,
    // ÑéÖ¤ÂëͼƬ¿í¶È£¬Æ¾Ö¤ËùÐè¾ÙÐÐÉèÖÃÑéÖ¤ÂëͼƬ¿í¶È
    'imageW' => 150,
    // ÑéÖ¤ÂëλÊý£¬Æ¾Ö¤ËùÐè¾ÙÐÐÉèÖÃÑéÖ¤ÂëλÊý
    'length' => 4,
    // ÑéÖ¤ÀֳɺóÊÇ·ñÖØÖÃ
    'reset' => true
]

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use think\captcha\Captcha;

class Index
{
   public function verify()
   {
      $config = [
         'codeSet' => '0123456789',
         'useZh'   => false,
         'fontSize'=> 20, 
         'length' => 4,
         'useNoise' => false,
      ]; //ÑéÖ¤ÂëÉèÖÃ
      $captcha = new Captcha($config);
      return $captcha->entry(); 
   }
}

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ÆäÖÐcaptcha_img()ÒªÁìÊÇthinkcaptchaÀ©Õ¹°ü×Ô´øµÄÑéÖ¤ÂëÊä³öÒªÁ죬¿ÉÓÃÓÚÖ±½ÓÊä³öÌìÉúµÄÑéÖ¤Âë ¡£

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use think\captcha\Captcha;

class Index
{
   public function login()
   {
      $captcha = new Captcha();
      if (!$captcha->check(input('code'))) {
         $this->error('ÑéÖ¤Âë¹ýʧ');
      } else {
         //ÆäËûÓªÒµÂß¼­
      }
   }
}

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