A simple way to use verification codes in thinkphp, _php tutorials

A simple way to use verification codes in thinkphp,

This paper describes the simple use of verification code in thinkphp. Share to everyone for your reference, as follows:

First generate the verification code, in the action file, directly call the thinkphp provided in the method can be generated, to ensure that the extension of PHP GD2

As follows:

Class Useraction Model extends model{/** * Display Verification Code information */Public Function verify () {     ob_clean ();///Erase (Erase) output buffer, i.e. empty the front Out, usually the verification code does not display, you can consider the issue of     import (' ORG. Util.image ');     Image::buildimageverify ();  }}

At the same time, save the value of the generated verification code with the SESSION: Copy the Code as follows: $_session[' verify ']
Note: The value that was saved after MD5 is encrypted .

In the corresponding TPL file, the verification code is called, using the following method:
The copy Code code is as follows: can realize the click Refresh function

The display results are as follows:

The user submits the past verification code, which needs to be MD5 encrypted, compared with the saved session value , namely:

Determine if MD5 ($_post[' verify ') is equal to $_session[' verify '].

To complete the basic use of verification code

It is hoped that this article is helpful to the PHP program design based on thinkphp framework.

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