Solution to the problem that thinkphp verification code cannot be displayed_PHP tutorial

php configuration file php.ini, search for extension=php_gd2.dll, and remove the semicolon in front;

1. Add a verify method to the module class to display the verification code

Copy the code The code is as follows:

Public function verify(){
// Import Image class library
import("ORG.Util.Image");
Image::buildImageVerify();
}

2. Use verification code in the form

Copy code The code is as follows:

3. Verification code refresh

Copy code The code is as follows:

4. Verification code verification

Copy code The code is as follows:

if($_SESSION['verify'] ! = md5($_POST['verify'])) {
$this->error('Verification code error!');
}

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