Delete a file in Laravel 5.1

Delete file in Laravel 5.1:

Today we will discuss how to delete a file in Laravel 5.1

You know you could use PHP's unlink() method, but want to do it the Laravel way then use the File::delete() method.

<?php

namespace App\Http\Controllers;

use File;

class TestController extends Controller
{

 public function deleteFile()
 {
  // Delete a single file
  File::delete($filename);

  // Delete multiple files
  File::delete($file1, $file2, $file3);

  // Delete an array of files
  $files = array($file1, $file2);
  File::delete($files);
 }

}
?>

Errors are quietly ignored.

If there's a problem deleting the file, any error is silently ignored. If it's important that a file was deleted, check it's existence after deleting it with File::exists().

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How to compress image in php

Compress image in php:

For compressing an image in php we have to use this code for this:


<?php
    function compress($source, $destination, $quality) {
        $info = getimagesize($source);
        if ($info['mime'] == 'image/jpeg')
            $image = imagecreatefromjpeg($source);
        elseif ($info['mime'] == 'image/gif')
            $image = imagecreatefromgif($source);
        elseif ($info['mime'] == 'image/png')
            $image = imagecreatefrompng($source);
        $res=imagejpeg($image, $destination, $quality);
        return $res;
    }
   compress('image.jpg','img/image.jpg',80);
?>


Here are the $source is the path of image and $destination is the path where we have to save the image after editing.

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How to generate a Certificate Signing Request (CSR) - Apache 2.x

Generate Certificate Signing Request in Apache:

Follow these instructions to generate a certificate signing request (CSR) for your Apache Web server. When you have completed generating your CSR, cut/copy and paste it into the CSR field on the SSL certificate-request page.
To Generate a Certificate Signing Request for Apache 2.x
1. Log in to your server's terminal (SSH).
    At the prompt, type the following command:


    openssl req -new -newkey rsa:2048 -nodes -keyout yourdomain.key -out yourdomain.csr
    Replace yourdomain with the domain name you're securing. For example, if your domain name is       coolexample.com, you would type coolexample.key and coolexample.csr.
   
2. Enter the requested information:
     2.1.  Common Name: The fully-qualified domain name, or URL, you're securing.
        If you are requesting a Wildcard certificate, add an asterisk (*) to the left of the common name where you want the wildcard, for example *.coolexample.com.
     2.2.  Organization: The legally-registered name for your business. If you are enrolling as an individual, enter the certificate requestor's name.
     2.3.  Organization Unit: If applicable, enter the DBA (doing business as) name.
     2.4.  City or Locality: Name of the city where your organization is registered/located. Do not abbreviate.
     2.5  State or Province: Name of the state or province where your organization is located. Do not abbreviate.
     2.6. Country: The two-letter International Organization for Standardization (ISO) format country code for where your organization is legally registered.
        If you do not want to enter a password for this SSL, you can leave the Passphrase field blank. However, please understand there might be additional risks.

3. Open the CSR in a text editor and copy all of the text.
    Paste the full CSR into the SSL enrollment form in your account.

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How to use CORS requests in Laravel 5 with middleware

CORS requests in Laravel 5 with middleware:

For this we have to firstly create a middleware with name CORS and write the following code in it.

<?php

namespace App\Http\Middleware;

use Closure;


class CORS
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        header("Access-Control-Allow-Origin: *");

        // ALLOW OPTIONS METHOD
        $headers = [
            'Access-Control-Allow-Methods'=> 'POST, GET, OPTIONS, PUT, DELETE',
            'Access-Control-Allow-Headers'=> 'Content-Type, X-Auth-Token, Origin'
        ];
        if($request->getMethod() == "OPTIONS") {
            // The client-side application can set only headers allowed in Access-Control-Allow-Headers
            return Response::make('OK', 200, $headers);
        }

        $response = $next($request);
        foreach($headers as $key => $value)
            $response->header($key, $value);
        return $response;
    }
}

Now go to the app/Http/kernel.php & add this line in $routeMiddleware

'cors' => \App\Http\Middleware\CORS::class,

Now in route.php we can use is like this



Route::group(['middleware' => 'cors'], function () {
    get('/script', 'ScriptController@getDetail');
    get('/response', 'ScriptController@postDetail');
});

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