src/Service/ImageHelper/ImageResizer.php line 30

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  1. <?php
  2. /**
  3.  * Created by PhpStorm.
  4.  * User: anthony
  5.  * Date: 04/12/18
  6.  * Time: 11:56
  7.  */
  9. namespace App\Service\ImageHelper;
  12. use Symfony\Component\Filesystem\Filesystem;
  14. class ImageResizer implements ImageResizerInterface
  15. {
  16.     /**
  17.      * Resize an image
  18.      *
  19.      * @param string $image (The full image path with filename and extension)
  20.      * @param string $newPath (The new path to where the image needs to be stored)
  21.      * @param int $height (The new height to resize the image to)
  22.      * @param int $width (The new width to resize the image to)
  23.      * @return string (The new path to the reized image)
  24.      */
  26.     public function resizeImage($image, $newPath, $height = 0, $width = 100)
  27.     {
  29.         // Get current dimensions
  30.         $ImageDetails = $this->getImageDetails($image);
  31.         $name = $ImageDetails->name;
  32.         $height_orig = $ImageDetails->height;
  33.         $width_orig = $ImageDetails->width;
  34.         $fileExtention = $ImageDetails->extension;
  35.         $ratio = $ImageDetails->ratio;
  36.         $jpegQuality = 100;
  38.         if($width > $width_orig){
  39.             $height = $height_orig * ($width / $width_orig);
  40.         } else if ($height > $height_orig){
  41.             $width = $width_orig * ($height / $height_orig);
  42.         } else {
  43.             if($height > 0){
  44.                 $width = $height * $ratio;
  45.             } else if($width > 0){
  46.                 $height = $width / $ratio;
  47.             }
  48.         }
  49.         $width = round($width);
  50.         $height = round($height);
  51.         $gd_image_dest = imagecreatetruecolor($width, $height);
  52.         $gd_image_src = null;
  54.         switch( strtolower($fileExtention) ){
  55.             case 'png' :
  56.                 $gd_image_src = imagecreatefrompng($image);
  57.                 imagealphablending( $gd_image_dest, false );
  58.                 imagesavealpha( $gd_image_dest, true );
  59.                 break;
  60.             case 'jpeg': case 'jpg': $gd_image_src = imagecreatefromjpeg($image);
  61.                 break;
  62.             case 'gif' : $gd_image_src = imagecreatefromgif($image);
  63.                 break;
  64.             default: break;
  65.         }
  66.         imagecopyresampled($gd_image_dest, $gd_image_src, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
  68.         $filesystem = new Filesystem();
  69.         $filesystem->mkdir($newPath, 0777);
  70.         $newFileName = $newPath . $name . "." . $fileExtention;
  72.         switch( $fileExtention ){
  73.             case 'png' : imagepng($gd_image_dest, $newFileName); break;
  74.             case 'jpeg' : case 'jpg' : imagejpeg($gd_image_dest, $newFileName, $jpegQuality); break;
  75.             case 'gif' : imagegif($gd_image_dest, $newFileName); break;
  76.             default: break;
  77.         }
  79.         return $newPath;
  80.     }
  82.         /**
  83.          *
  84.          * Gets image details such as the extension, sizes and filename and returns them as a standard object.
  85.          *
  86.          * @param $imageWithPath
  87.          * @return \stdClass
  88.          */
  89.         private function getImageDetails($imageWithPath){
  90.         $size = getimagesize($imageWithPath);
  92.         $imgParts = explode("/",$imageWithPath);
  93.         $lastPart = $imgParts[count($imgParts)-1];
  95.         if(stristr("?",$lastPart)){
  96.             $lastPart = substr($lastPart,0,stripos("?",$lastPart));
  97.         }
  98.         if(stristr("#",$lastPart)){
  99.             $lastPart = substr($lastPart,0,stripos("#",$lastPart));
  100.         }
  102.         $dotPos     = stripos($lastPart,".");
  103.         $name         = substr($lastPart,0,$dotPos);
  104.         $extension     = substr($lastPart,$dotPos+1);
  106.         $Details = new \stdClass();
  107.         $Details->height    = $size[1];
  108.         $Details->width        = $size[0];
  109.         $Details->ratio        = $size[0] / $size[1];
  110.         $Details->extension = $extension;
  111.         $Details->name         = $name;
  113.         return $Details;
  114.     }
  115. }