tp5 (thinkPHP5 framework) captcha verification code configuration and verification operation example

This article describes the configuration and verification operation of captcha verification code in tp5 (thinkPHP5 framework). Share it for your reference, as follows:

1-Installation

composer require topthink/think-captcha 1.* -vvv

2-Configuration File

'captcha' =&gt; [    // Verification code character set 3.  'codeSet' =&gt; '2345678abcdefhijkmnpqrstuvwxyzABCDEFGHJKLMNPQRTUVWXY',     // Verification code font size (px) 5.  'fontSize' =&gt; 28,     // Whether to draw confusion curves 7.  'useCurve' =&gt; false,     // Verification code picture height 9.  'imageH'  =&gt; 50,    // Verification code picture width 11.  'imageW'  =&gt; 200,     // The number of verification code digits is 13.  'length'  =&gt; 4,     // Whether to reset after verification is successful 15.  'reset'  =&gt; true
  ],

3-html code

&lt;div class="yzm"&gt;
  &lt;img src="{:captcha_src()}" class="verify" onclick="resVerify()" alt="Verification Code" /&gt;
&lt;a href="javascript:resVerify();" rel="external nofollow"  &gt;Can't see clearly，Change one&lt;/a&gt;
&lt;/div&gt;

<img src="{:captcha_src()}" class="verify" 
onclick="javascript:='{:captcha_src()}?rand='+()" >

4-Controller Verification at login

$captcha=input("captcha");
 //verifyif (!captcha_check($captcha)){
  exit(json_encode(array('status'=&gt;0,'msg'=&gt;'Verification code error')));
}

//Verification code Verification code$captcha = new Captcha();
if (!$captcha-&gt;check(input("captcha"))){
  return $this-&gt;error("Verification code error");
}

More features and plug-ins Reference address:/he_he/thinkphp5/787173

For more information about thinkPHP related content, please check out the topic of this site:ThinkPHP Introduction Tutorial》、《Summary of the operation skills of thinkPHP templates》、《Summary of common methods of ThinkPHP》、《Codeigniter Introductory Tutorial》、《Advanced tutorial on CI (CodeIgniter) framework》、《Zend FrameWork Framework Introduction Tutorial"and"PHP template technical summary》。

I hope that the description in this article will be helpful to everyone's PHP programming based on the ThinkPHP framework.