Easily generate combined thumbnails under PHP using powerful Imagick, Imagick thumbnails _php Tutorials

Use powerful Imagick to easily generate combined thumbnails under PHP, Imagick thumbnail images

project: blogtarget: use-imagick-to-composite-images-thumbnail.mddate: 2016-02-19status: publishtags:    - php    - imagick    - thumbnailcategories:    - php

This imagick is what is said to be an ImageMagick extension under PHP. It's easy to use to pecl install it--a single command is done:

sudo pecl install imagick

(after the extension is installed, add it in the php.ini extension=imagick.so , then remember to restart 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:

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 $height * @return static * @throws thumbnailexception */public static function CreateFrom        Images ($images, $width, $height) {if (empty ($images)) {throw new Thumbnailexception ("No images!");        } $thumbnail = new static ();        $thumbnail->newimage ($width, $height, ' white ', ' jpg ');        $thumbnail->compositeimages ($images);    return $thumbnail;        The Public Function compositeimages ($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 ' and $height,            ]                    ]                ]; Case 2://| 0 |                1 |     return [0] = [' to ' + = ' x ' = 0, ' y ' = 0],                   ' Size ' = = [' width ' = $width/2, ' height ' = $height,]], 1 = [' To ' =& Gt [' x ' = = $width/2, ' y ' = + 0], ' size ' = = [' width ' = = $widt            H/2, ' height ' = $height,]]; Case 3://| 0 |                1 | // |   2 |                |                        return [0] = [' to ' + = ' x ' = 0, ' y ' = 0],  ' Size ' = = [' width ' = $width/2, ' height ' = ' $height/ 2,]], 1 = [' to ' + = [' x ' =& Gt                       $width/2, ' y ' = + 0], ' Size ' = = [' width ' = $width/2, ' height ' = ' $height,  ], 2 = [' to ' + = ' x ' = 0,                            ' Y ' = $height/2], ' size ' = = [' width ' = = $width/2,            ' Height ' = $height/2,]]; Default://>= 4://| 0 |                1 | // | 2 |                3 |                        return [0] = [' to ' + = ' x ' = 0, ' y ' = 0],  ' Size ' = = [' width ' = $width/2, ' height ' = ' $height/ 2,]], 1 = [' to ' + = [' x ' =& Gt      $width/2, ' y ' = + 0],                  ' Size ' = = [' width ' = $width/2, ' height '  = = $height/2,]], 2 = = [' To ' = = [' x ' = 0, ' y ' = + $height/2], ' size ' = = [' Width ' =& Gt                    $width/2, ' height ' = $height/2,],                        3 = [' to ' + = [' x ' = ' = $width/2, ' y ' = + $height/2], ' Size ' = = [' width ' = $width/2, ' height ' and ' = ' $height        /2,]],]; }    }}

Try it with a test:

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

The effect came out immediately:

Praise A ~

(see Http://github.com/clarence-pan/thumbnail for detailed code)

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