PHP uses Imagick to generate combined thumbnail images

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The Imagick here is the extension of ImageMagick under PHP. Use PECL to install it. Call it a simple, easy command:

Copy the Code code as follows:

sudo pecl install Imagick

(add extension=imagick.so to the php.ini after the extension is installed, and then remember to restart the Apache or PHP-FPM service.) ）

A recent requirement is to combine multiple images to create thumbnails, just using this powerful imagick extension.

This requirement is to generate thumbnails like this:

1. If there are 1 pictures, the thumbnail image of this image is generated directly;

2. If there are 2 pictures, one on the left one on the right, the other half;

3. If there are 3 pictures, then the two left are evenly distributed, one exclusive to the right;

4. If there are 4 pictures, the average space is allocated like the field grid;

5. More pictures, then only take the first 4, according to the field of the grid to generate thumbnails.

It's a lot of rules, but it's not too complicated, and it's going to work out quickly:

namespace \clarence\thumbnail;class thumbnail extends \imagick{/*** @param array $images * @param int $width * @param int $h eight* @return static* @throws thumbnailexception*/public static function Createfromimages ($images, $width, $height) {if (Empty ($images)) {throw new Thumbnailexception ("No images!");} $thumbnail = new static (); $thumbnail->newimage ($width, $height, ' white ', ' jpg '); $thumbnail->compositeimages ($ images); return $thumbnail;} Public Function Compositeimages ($images) {$imagesKeys = Array_keys ($images); $compositeConfig = $this Calccompositeimagesposandsize ($images), foreach ($compositeConfig as $index = = $cfg) {$imgKey = $imagesKeys [$index]; $img = new \imagick ($images [$imgKey]) $img = $this->makecompositethumbnail ($img, $cfg); $this->compositeimage ($ IMG, self::composite_over, $cfg [' to '] [' x '], $cfg [' to '] [' y ']);}} protected function Makecompositethumbnail (\imagick $img, $cfg) {$img->cropthumbnailimage ($cfg [' Size '] [' width '], $ cfg[' size ' [' height ']); return $img;} Protected function Calccompositeimagesposandsize ($images) {$width = $this->getimagewidth (); $height = $this Getimageheight (); switch (count ($images)) {case 0:throw new thumbnailexception ("No images!"); Case 1://| 0 |return [0 = [' to ' + = ' x ' = 0, ' y ' + 0], ' size ' = [' width ' = $width, ' height ' = $height,]]; Case 2://| 0 | 1 |return [0] = [' to ' + = ' x ' = 0, ' y ' + 0], ' size ' = [' width ' = ' = $width/2, ' height ' = $height, ]],1 = [' to ' + = [' x ' = = $width/2, ' y ' = + 0], ' size ' = = [' width ' = ' = ' + $width/2, ' height ' = $height, ]]];case 3://| 0 | 1 |//| 2 | |return [0] = [' to ' + = [' x ' = 0, ' y ' + 0], ' size ' = [' width ' = ' $width/2, ' height ' and ' = ' $heigh t/2,]],1 = [' to ' + = [' x ' = = $width/2, ' y ' = + 0], ' size ' = = [' width ' = ' = ' + $width/2, ' height ' = $h eight,]],2 = [' to ' + = [' x ' = = 0, ' y ' = + $height/2], ' size ' = = [' width ' = ' + ' $width/2, ' height ' = $height/2,]],];d efault://>= 4://| 0 | 1 |//| 2 | 3 |return [0] = [' to ' + = ' x ' = 0, ' y ' + 0], ' size ' = = ' width ' = $width/2, ' height ' and ' = ' $height /2,]],1 = [' to ' + = [' x ' = + $width/2, ' y ' = + 0], ' size ' = = [' width ' = ' = ' + $width/2, ' height ' = $hei ght/2,]],2 = [' to ' + = [' x ' = 0, ' y ' = + $height/2], ' size ' = = [' width ' = ' + $width/2, ' height ' =&gt ; $height/2,]],3 = [' to ' + = [' x ' = = $width/2, ' y ' = + $height/2], ' size ' = = [' width ' = = $width/2, ' Height ' = $height/2,]],];}}

Try it with a test:

Copy the Code code as follows:

$thumbnail = \clarence\thumbnail\thumbnail::createfromimages ($srcImages, 240, 320);
$thumbnail->writeimage ($outputDir. " /example.jpg ");

The above content to introduce PHP to use Imagick to generate a combination of thumbnails of the relevant knowledge, we hope to help!

The above introduces PHP using Imagick to generate a combination of thumbnails, including aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

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