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Upload File

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<?php

define('_JEXEC', 1);

define('JPATH_BASE',
dirname(dirname(dirname(dirname(__FILE__)))));
require_once JPATH_BASE . '/includes/defines.php';
require_once JPATH_BASE . '/includes/framework.php';
$app = JFactory::getApplication('site');


use Joomla\CMS\Filesystem\File;


// var_dump(function_exists('gd_info')); // check GD extension
installed and enabled on php
// var_dump(function_exists('getimagesize'));
// die();

$filename = __DIR__ . '/log.txt';
// file_put_contents($filename, '$_FILES = ' . print_r($_FILES,
True) . "\n", FILE_APPEND);
// file_put_contents($filename, '$_POST = ' . print_r($_POST,
True) . "\n", FILE_APPEND);
// file_put_contents($filename, '$_req = ' . file_get_contents(
'php://input' ) . "\n", FILE_APPEND);
// file_put_contents($filename, 'input files = ' .
print_r($app->input->files->get('atachedfile'), True) .
"\n", FILE_APPEND);



function getName($n)
{
    $characters = '0123456789abcdefghijklmnopqrstuvwxyz';
    $randomString = '';
    for ($i = 0; $i < $n; $i++)
    {
        $index = rand(0, strlen($characters) - 1);
        $randomString .= $characters[$index];
    }
    return $randomString;
}



$file = $app->input->files->get('atachedfile');


$info = pathinfo($file['name']);
if(isset($info['extension']) || $info['filename'] ==
'blob')
{
    $ext = isset($info['extension']) ?
$info['extension'] : 'opus'; // get the extension of
the file
    $newname = getName(10) . ".$ext";
    $target = dirname(dirname(__FILE__)) . '/files/' . $newname;

    $allowUnsafe = false;

    // if (move_uploaded_file($file['tmp_name'], $target))
    if(JFile::upload($file['tmp_name'], $target, false,
$allowUnsafe))
    {
        if(in_array($ext, ['jpg', 'jpeg',
'png', 'gif', 'bmp', 'jfif',
'pjpeg', 'webp', 'tif', 'tiff']))
        {
          if(function_exists('gd_info') &&
!function_exists('compress_image'))
          {
              function compress_image($src, $dest , $quality) 
              {
                  $info = getimagesize($src);
               
                  if ($info['mime'] == 'image/jpeg') 
                  {
                      $image = imagecreatefromjpeg($src);
                  }
                  elseif ($info['mime'] == 'image/gif')

                  {
                      $image = imagecreatefromgif($src);
                  }
                  elseif ($info['mime'] == 'image/png')

                  {
                      $image = imagecreatefrompng($src);
                  }
                  else
                  {
                      die('Unknown image file format');
                  }
               
                  //compress and save file to jpg
                  imagejpeg($image, $dest, $quality);
               
                  //return destination file 
                  return $dest;
              }
              compress_image($target, $target, 30);
          }
        }
        echo $newname;
        // file_put_contents($filename, 'File is valid, and was
successfully uploaded'. "\n", FILE_APPEND);
    } 
    else
    {
        // file_put_contents($filename, 'Upload failed'.
"\n", FILE_APPEND);
    }
}

?>