高效处理大数据量：PHP Imagick最佳实践与性能优化技巧

memory_limit = 256M
max_execution_time = 300

$image = new Imagick('large_image.jpg');
// 处理图像...
$image->clear();
$image->destroy();

$image = new Imagick('large_image.jpg');
$width = $image->getWidth();
$height = $image->getHeight();
$chunkWidth = 100;
$chunkHeight = 100;

for ($y = 0; $y < $height; $y += $chunkHeight) {
    for ($x = 0; $x < $width; $x += $chunkWidth) {
        $crop = new ImagickCrop($image, new ImagickPixelRegion($image, $x, $y, $chunkWidth, $chunkHeight));
        $crop->setImage($image);
        // 处理图像的子区域...
    }
}

$image->clear();
$image->destroy();

$image = new Imagick('large_image.jpg');
$image->setResolution(100, 100); // 设置较低的分辨率
// 处理图像...
$image->clear();
$image->destroy();

$image = new Imagick('large_image.jpg');
// 处理图像...
$image->optimizeImage();
$image->clear();
$image->destroy();