php Realization of Equal Scale Compression Picture

In this paper, we share the specific code of php to compress pictures in equal proportion for your reference. The specific contents are as follows

/**
   * desription  Compressed picture 
   * @param sting $imgsrc  Picture path 
   * @param string $imgdst  Save the path after compression 
   */
  public function compressedImage($imgsrc, $imgdst) {
    list($width, $height, $type) = getimagesize($imgsrc);
    
    $new_width = $width;// Width of compressed picture 
    $new_height = $height;// The compressed picture is high 
        
    if($width >= 600){
      $per = 600 / $width;// Calculate the proportion 
      $new_width = $width * $per;
      $new_height = $height * $per;
    }
    
    switch ($type) {
      case 1:
        $giftype = check_gifcartoon($imgsrc);
        if ($giftype) {
          header('Content-Type:image/gif');
          $image_wp = imagecreatetruecolor($new_width, $new_height);
          $image = imagecreatefromgif($imgsrc);
          imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
          //90 It represents the quality and compressed picture capacity 
          imagejpeg($image_wp, $imgdst, 90);
          imagedestroy($image_wp);
          imagedestroy($image);
        }
        break;
      case 2:
        header('Content-Type:image/jpeg');
        $image_wp = imagecreatetruecolor($new_width, $new_height);
        $image = imagecreatefromjpeg($imgsrc);
        imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
        //90 It represents the quality and compressed picture capacity 
        imagejpeg($image_wp, $imgdst, 90);
        imagedestroy($image_wp);
        imagedestroy($image);
        break;
      case 3:
        header('Content-Type:image/png');
        $image_wp = imagecreatetruecolor($new_width, $new_height);
        $image = imagecreatefrompng($imgsrc);
        imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
        //90 It represents the quality and compressed picture capacity 
        imagejpeg($image_wp, $imgdst, 90);
        imagedestroy($image_wp);
        imagedestroy($image);
        break;
    }
  }