Laravel Image creation code - php

Question

I have copied the following code from somewhere in the web. It is stored in a file called captcha.php:
$md5_hash = md5(rand(0,999));
//We don't need a 32 character long string so we trim it down to 5
$security_code = substr($md5_hash, 15, 5);
//Set the session to store the security code
//Set the image width and height
$width = 100;
$height = 20;
//Create the image resource
$image = ImageCreate($width, $height);
//We are making three colors, white, black and gray
$white = ImageColorAllocate($image, 255, 255, 255);
$black = ImageColorAllocate($image, 0, 0, 0);
$grey = ImageColorAllocate($image, 204, 204, 204);
//Make the background black
ImageFill($image, 0, 0, $black);
//Add randomly generated string in white to the image
ImageString($image, 3, 30, 3, $security_code, $white);
//Throw in some lines to make it a little bit harder for any bots to break
ImageRectangle($image,0,0,$width-1,$height-1,$grey);
imageline($image, 0, $height/2, $width, $height/2, $grey);
imageline($image, $width/2, 0, $width/2, $height, $grey);
//Tell the browser what kind of file is come in
header("Content-Type: image/jpeg");
//Output the newly created image in jpeg format
ImageJpeg($image);
//Free up resources
ImageDestroy($image);
I need to use in the laravel. I should give the path of this php file to the src attribute of the <img> tag. When the file is located in a folder in public directory, it works, but when I do the following in a route, it does not work, and no image gets created.
I need to incorporate it into the Laravel Routes to use its Session:: capabilities.
Here is the router in which the above code is inserted:
Route::get('captcha', array('as'=>'captcha'), function(){
// above code
});

Answer 1

I'm not clear about your problem but you can create a class and put this code inside that class using a public method, for example, you may create a class inside your app/libs folder (create the libs folder inside app) and in this libs folder create a class similar to this:
namespace Libs\Captcha;
class Captcha {
public function dumpCaptcha()
{
// put the captcha code here but make
// changes to the last part as given below
//Tell the browser what kind of file is come in
ob_start();
header("Content-Type: image/jpeg");
ImageJpeg($image);
$img = ob_get_clean();
ImageDestroy($image);
return base64_encode($img);
}
}
In the composer.json file's autoload -> classmap section add another entry at the end like this:
"autoload": {
"classmap": [
// ...
"app/tests/TestCase.php",
"app/libs/captcha/Captcha.php",
]
}
Then run composer dump-autoload from the terminal/command prompt and then use this class inside your route like this:
Route::get('captcha', array('as'=>'captcha'), function(){
$captcha = App::make('Libs\\Captcha\\Captcha');
return View::make('view_name_here')->with('captchaImage', $captcha->dumpCaptcha());
});
Then in your view you may use something like this
<img src={{ 'data:image/jpeg;base64,' . $captchaImage }} />
The image will be displayed.