App\Libraries\ImageProcessor::process PHP Method

    public function process()
    {
        $this->parseInput();
        $this->basicCheck();
        $this->purgeExif();
        $inputImage = open_image($this->inputPath, $this->inputDim);
        if ($inputImage === null) {
            throw new ImageProcessorException(trans('users.show.edit.cover.upload.broken_file'));
        }
        if ($this->inputDim[0] === $this->targetDim[0] && $this->inputDim[1] === $this->targetDim[1]) {
            if ($this->inputFileSize < $this->targetFileSize) {
                return;
            }
            $image = $inputImage;
        } else {
            $start = [0, 0];
            $inDim = [$this->inputDim[0], $this->inputDim[1]];
            $outDim = [$this->targetDim[0], $this->targetDim[1]];
            // figure out how to crop.
            if ($this->inputDim[0] / $this->inputDim[1] >= $this->targetDim[0] / $this->targetDim[1]) {
                $inDim[0] = $this->targetDim[0] / $this->targetDim[1] * $this->inputDim[1];
                $start[0] = ($this->inputDim[0] - $inDim[0]) / 2;
            } else {
                $inDim[1] = $this->targetDim[1] / $this->targetDim[0] * $this->inputDim[0];
                $start[1] = ($this->inputDim[1] - $inDim[1]) / 2;
            }
            // don't scale if input image is smaller.
            if ($inDim[0] < $outDim[0] || $inDim[1] < $outDim[1]) {
                $outDim = $inDim;
            }
            $image = imagecreatetruecolor($outDim[0], $outDim[1]);
            imagecopyresampled($image, $inputImage, 0, 0, $start[0], $start[1], $outDim[0], $outDim[1], $inDim[0], $inDim[1]);
        }
        imagejpeg($image, $this->inputPath);
        $this->parseInput(true);
    }

 public function storeFile($filePath)
 {
     $image = new ImageProcessor($filePath, $this->maxDimensions, $this->maxFileSize);
     $image->process();
     $this->deleteFile();
     $this->hash = hash_file('sha256', $image->inputPath);
     $this->ext = $image->ext();
     $this->storage()->put($this->filePath(), file_get_contents($image->inputPath));
 }