PHP code example of kornrunner / blurhash

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

kornrunner / blurhash example snippets

ornrunner\Blurhash\Blurhash;

$file  = 'test/data/img1.jpg';
$image = imagecreatefromstring(file_get_contents($file));
$width = imagesx($image);
$height = imagesy($image);

$pixels = [];
for ($y = 0; $y < $height; ++$y) {
    $row = [];
    for ($x = 0; $x < $width; ++$x) {
        $index = imagecolorat($image, $x, $y);
        $colors = imagecolorsforindex($image, $index);

        $row[] = [$colors['red'], $colors['green'], $colors['blue']];
    }
    $pixels[] = $row;
}

$components_x = 4;
$components_y = 3;
$blurhash = Blurhash::encode($pixels, $components_x, $components_y);
// LEHV9uae2yk8pyo0adR*.7kCMdnj

use kornrunner\Blurhash\Blurhash;
use Intervention\Image\Colors\Rgb\Channels\Blue;
use Intervention\Image\Colors\Rgb\Channels\Green;
use Intervention\Image\Colors\Rgb\Channels\Red;
use Intervention\Image\Colors\Rgb\Color as RgbColor;
use Intervention\Image\Colors\Rgb\Colorspace as RgbColorspace;
use Intervention\Image\Drivers\Gd\Driver;
use Intervention\Image\ImageManager;

$file  = 'test/data/img1.jpg';
$manager = new ImageManager(new Driver());
$image = $manager->read($file);
$width = $image->width();
$height = $image->height();

$pixels = [];
for ($y = 0; $y < $height; ++$y) {
    $row = [];
    for ($x = 0; $x < $width; ++$x) {
        $colors = $image->pickColor($x, $y);
        
        if (!($colors instanceof RgbColor)) {
            $colors = $colors->convertTo(new RgbColorspace());
        }

        $row[] = [
            $colors->channel(Red::class)->value(),
            $colors->channel(Green::class)->value(),
            $colors->channel(Blue::class)->value(),
        ];
    }
    $pixels[] = $row;
}

$components_x = 4;
$components_y = 3;
$blurhash = Blurhash::encode($pixels, $components_x, $components_y);
// LEHV9uae2yk8pyo0adR*.7kCMdnj

ornrunner\Blurhash\Blurhash;

$blurhash = 'LEHV6nWB2yk8pyo0adR*.7kCMdnj';
$width    = 269;
$height   = 173;

$pixels = Blurhash::decode($blurhash, $width, $height);
$image  = imagecreatetruecolor($width, $height);
for ($y = 0; $y < $height; ++$y) {
    for ($x = 0; $x < $width; ++$x) {
        [$r, $g, $b] = $pixels[$y][$x];
        imagesetpixel($image, $x, $y, imagecolorallocate($image, $r, $g, $b));
    }
}
imagepng($image, 'blurhash.png');