Verification Code library for Laravel

In LaravelThere are a lot of picture verification code in the library can be used, this chapter introduces its LaravelOne: Gregwar/captcha, this library is relatively simple, in Laravelare more commonly used. Below we will introduce the following details of use:

First, the configuration is added as follows in Composer.json:

"Require": {        ...        " Gregwar/captcha ":" 1.* "    },

Then, have become accustomed to the command:

Composer Update

The next step is to use it normally, depending on the development needs, there are many ways to use it.

You can save a captcha picture file:

<?php$builder->save (' out.jpg ');

You can output images directly to a Web page:

<?phpheader (' content-type:image/jpeg '); $builder->output ();

You can generate inline pictures:

inline ();?>"/>

The following shows one of the ways to use a direct output image to a Web page.

Define a controller:

<?php namespace App\http\controllers;use app\http\requests;use app\http\controllers\controller;use Illuminate\ Http\request;

referencing the corresponding namespace

Use Gregwar\captcha\captchabuilder;use session;class Kitcontroller extends Controller {   /**    * Display a listing of the resource.    *    * @return Response    *   /Public Function captcha ($tmp)   {       //Generate CAPTCHA Picture Builder object, configure corresponding properties       $ Builder = new Captchabuilder;       You can set the picture width height and font       $builder->build ($width =, $height = +, $font = null);       Get the contents of the captcha       $phrase = $builder->getphrase ();       Deposit the content       in Session session::flash (' Milkcaptcha ', $phrase);       Generate Picture       header ("Cache-control:no-cache, must-revalidate");       Header (' Content-type:image/jpeg ');       $builder->output ();   }}

Below we can set the corresponding router to access this CAPTCHA image, modify the router.php:

Route::get (' kit/captcha/{tmp} ', ' Kitcontroller@captcha ');

You can now see this image through the specific URL that you can access.

Verification Code

The inside of the form is relatively simple to read:

<input type= "text" name= "Captcha" class= "Form-control" style= "width:300px;" ><a onclick= "Javascript:re_captcha ();" >  </a><script>    function Re_captcha () {    $url = "{{URL (' Kit/captcha ')}}";        $url = $url + "/" + math.random ();        document.getElementById (' C2c98f0de5a04167a9e427d883690ff6 '). src= $url;  } </script>

Finally, in the form submission page to verify the corresponding verification code, the library also provides us with the corresponding method:

$userInput = $request->get (' Captcha '), if ($builder->testphrase ($userInput)) {    //user input Verification code correct    return ' You entered the correct code ";} else {    //user input code Error    return ' you entered a CAPTCHA error ';}

At this point, the verification code is complete. The above is laravel Verification Code Library Gregwar/captcha the use of the process, interested in topic.alibabacloud.com search more Oh ~

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