free captcha code

The content of this tutorial is close to the technical direction I am good at: Safe contact forms. As I mentioned in the previous tutorial, A common contact form helps a visitor communicate with you without exposing your email address to the

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To complete the background Management system login function, by looking at the login page, we can learn that we need to write a CAPTCHA image acquisition interface and login processing interface, and then write Ajax on the login page HTML.Before the

This article mainly introduces the ThinkPHP3.2.3 verification code display, refresh, calibration, with a certain reference value, interested in small partners can refer to. ThinkPHP3.2.3 Verification code display, refresh, check, as follows: Show

Show Verification CodeFirst create a public controller under Home/controller Publiccontroller1 entry (); 20 }21 /* Verification Code Check */23 public function check_verify ($code, $id = ") { $verify = new \think\v Erify ();

Show Verification CodeFirst create a public controller under Home/controller Publiccontroller1 entry (); }21 /* Verification Code Check */23 public function check_verify ($code, $id = ") { $verify = new \think\verify ( );

CSDN Free points Download you understand. 1, enter the resource address such as: http://download.csdn.net/download/gengqkun/4127808 2. Enter the verification code 3, click to download, will pop up the browser download. Note: The success rate in 70-80

Modified a very good php verification code (supporting Chinese ). Php captcha. class. php copy code :? PhpclassCaptcha {private $ width; private $ height; private $ codeNum; private $ code; private $ im; function _ const Php verification codeCaptcha.

Cases 1, produce a picture of PNG2. Set the background color for the picture3. Set font color and style4, generate a 4-digit random verification code5, the resulting each character adjusted rotation angle and position to the PNG picture6, add noise

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