هل توجد دالة أو كائن لتكبير الصور الصغيرة

وعليكم السلام ورحمة الله وبركاته

يمكنك استخدام ImageMagick للإطلاع أكثر PHP Image Processing (ImageMagick)

أو Smart image resizer

إن كان الهدف هو فقط عرض ذات الصورة في موقع بأكثر من حجم فجرب هذه الطريقة : Simplified Image Resizing with PHP

فهذه الطريقة ستوفر عليك الحجم الذي قد تستهلكه هذه الصورة المصغرة أو المكبرة(إن كان لديك الكثير لعرضه).

لنفرض أنه لدي صورة بحجم500x200 و أريد تكبيرها إلى 600x400 فهل هذا ممكن مع ImageMagick أو يوجد كائن لفعل هذا؟

يعنى ايه كائن ؟ حضرتك قصدك Class ؟

عموما زى ما تفضل الأخ MoHaMMaD Pro و جواب حضرتك لازم imagemagick تكونة متركبة مع الاباتشي لو حضرتك ماجر VPS او Dedicated Server تقدر تثبتها عن طريق الـ EasyApache فى الــ WHM

و ده Class كامل و مرفق معاه مثال بسيط لكيفية الاستخدام ممكن تستخدمه فى عمل الــ Resizing

<?php

   # ========================================================================#
   #
   #  Purpose:   Resizes and saves image
   #  Requires : Requires PHP5, GD library.
   #  Usage Example:
   #                     include("classes/resize_class.php");
   #                     $resizeObj = new resize('images/cars/large/input.jpg');
   #                     $resizeObj -> resizeImage(150, 100, 0);
   #                     $resizeObj -> saveImage('images/cars/large/output.jpg', 100);
   #
   #
   # ========================================================================#


		Class resize
		{
			// *** Class variables
			private $image;
		    private $width;
		    private $height;
			private $imageResized;

			function __construct($fileName)
			{
				// *** Open up the file
				$this->image = $this->openImage($fileName);

			    // *** Get width and height
			    $this->width  = imagesx($this->image);
			    $this->height = imagesy($this->image);
			}

			## --------------------------------------------------------

			private function openImage($file)
			{
				// *** Get extension
				$extension = strtolower(strrchr($file, '.'));

				switch($extension)
				{
					case '.jpg':
					case '.jpeg':
						$img = @imagecreatefromjpeg($file);
						break;
					case '.gif':
						$img = @imagecreatefromgif($file);
						break;
					case '.png':
						$img = @imagecreatefrompng($file);
						break;
					default:
						$img = false;
						break;
				}
				return $img;
			}

			## --------------------------------------------------------

			public function resizeImage($newWidth, $newHeight, $option="auto")
			{
				// *** Get optimal width and height - based on $option
				$optionArray = $this->getDimensions($newWidth, $newHeight, $option);

				$optimalWidth  = $optionArray['optimalWidth'];
				$optimalHeight = $optionArray['optimalHeight'];


				// *** Resample - create image canvas of x, y size
				$this->imageResized = imagecreatetruecolor($optimalWidth, $optimalHeight);
				imagecopyresampled($this->imageResized, $this->image, 0, 0, 0, 0, $optimalWidth, $optimalHeight, $this->width, $this->height);


				// *** if option is 'crop', then crop too
				if ($option == 'crop') {
					$this->crop($optimalWidth, $optimalHeight, $newWidth, $newHeight);
				}
			}

			## --------------------------------------------------------

			private function getDimensions($newWidth, $newHeight, $option)
			{

			   switch ($option)
				{
					case 'exact':
						$optimalWidth = $newWidth;
						$optimalHeight= $newHeight;
						break;
					case 'portrait':
						$optimalWidth = $this->getSizeByFixedHeight($newHeight);
						$optimalHeight= $newHeight;
						break;
					case 'landscape':
						$optimalWidth = $newWidth;
						$optimalHeight= $this->getSizeByFixedWidth($newWidth);
						break;
					case 'auto':
						$optionArray = $this->getSizeByAuto($newWidth, $newHeight);
						$optimalWidth = $optionArray['optimalWidth'];
						$optimalHeight = $optionArray['optimalHeight'];
						break;
					case 'crop':
						$optionArray = $this->getOptimalCrop($newWidth, $newHeight);
						$optimalWidth = $optionArray['optimalWidth'];
						$optimalHeight = $optionArray['optimalHeight'];
						break;
				}
				return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
			}

			## --------------------------------------------------------

			private function getSizeByFixedHeight($newHeight)
			{
				$ratio = $this->width / $this->height;
				$newWidth = $newHeight * $ratio;
				return $newWidth;
			}

			private function getSizeByFixedWidth($newWidth)
			{
				$ratio = $this->height / $this->width;
				$newHeight = $newWidth * $ratio;
				return $newHeight;
			}

			private function getSizeByAuto($newWidth, $newHeight)
			{
				if ($this->height < $this->width)
				// *** Image to be resized is wider (landscape)
				{
					$optimalWidth = $newWidth;
					$optimalHeight= $this->getSizeByFixedWidth($newWidth);
				}
				elseif ($this->height > $this->width)
				// *** Image to be resized is taller (portrait)
				{
					$optimalWidth = $this->getSizeByFixedHeight($newHeight);
					$optimalHeight= $newHeight;
				}
				else
				// *** Image to be resizerd is a square
				{
					if ($newHeight < $newWidth) {
						$optimalWidth = $newWidth;
						$optimalHeight= $this->getSizeByFixedWidth($newWidth);
					} else if ($newHeight > $newWidth) {
						$optimalWidth = $this->getSizeByFixedHeight($newHeight);
						$optimalHeight= $newHeight;
					} else {
						// *** Sqaure being resized to a square
						$optimalWidth = $newWidth;
						$optimalHeight= $newHeight;
					}
				}

				return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
			}

			## --------------------------------------------------------

			private function getOptimalCrop($newWidth, $newHeight)
			{

				$heightRatio = $this->height / $newHeight;
				$widthRatio  = $this->width /  $newWidth;

				if ($heightRatio < $widthRatio) {
					$optimalRatio = $heightRatio;
				} else {
					$optimalRatio = $widthRatio;
				}

				$optimalHeight = $this->height / $optimalRatio;
				$optimalWidth  = $this->width  / $optimalRatio;

				return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
			}

			## --------------------------------------------------------

			private function crop($optimalWidth, $optimalHeight, $newWidth, $newHeight)
			{
				// *** Find center - this will be used for the crop
				$cropStartX = ( $optimalWidth / 2) - ( $newWidth /2 );
				$cropStartY = ( $optimalHeight/ 2) - ( $newHeight/2 );

				$crop = $this->imageResized;
				//imagedestroy($this->imageResized);

				// *** Now crop from center to exact requested size
				$this->imageResized = imagecreatetruecolor($newWidth , $newHeight);
				imagecopyresampled($this->imageResized, $crop , 0, 0, $cropStartX, $cropStartY, $newWidth, $newHeight , $newWidth, $newHeight);
			}

			## --------------------------------------------------------

			public function saveImage($savePath, $imageQuality="100")
			{
				// *** Get extension
        		$extension = strrchr($savePath, '.');
       			$extension = strtolower($extension);

				switch($extension)
				{
					case '.jpg':
					case '.jpeg':
						if (imagetypes() & IMG_JPG) {
							imagejpeg($this->imageResized, $savePath, $imageQuality);
						}
						break;

					case '.gif':
						if (imagetypes() & IMG_GIF) {
							imagegif($this->imageResized, $savePath);
						}
						break;

					case '.png':
						// *** Scale quality from 0-100 to 0-9
						$scaleQuality = round(($imageQuality/100) * 9);

						// *** Invert quality setting as 0 is best, not 9
						$invertScaleQuality = 9 - $scaleQuality;

						if (imagetypes() & IMG_PNG) {
							 imagepng($this->imageResized, $savePath, $invertScaleQuality);
						}
						break;

					// ... etc

					default:
						// *** No extension - No save.
						break;
				}

				imagedestroy($this->imageResized);
			}


			## --------------------------------------------------------

		}
?>