$size['height']) {
$left = round(($size['width'] - $size['height']) / 2);
$resource->cropImage($size['height'], $size['height'], $left, 0);
} else if ($size['width'] < $size['height']) {
$top = round(($size['height'] - $size['width']) / 2);
$resource->cropImage($size['width'], $size['width'], 0, $top);
}
if ($type == 1) {
$resource->resizeImage(210, 210, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 2) {
$resource->resizeImage(720, 268, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 3) {
$resource->resizeImage(298, 198, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 4) {
$resource->resizeImage(338, 365, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 5) {
$resource->resizeImage(425, 425, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 6) {
$resource->resizeImage(150, 150, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 7) {
$resource->resizeImage(640, 640, Imagick::FILTER_CATROM, 1.0, true);
} elseif ($type == 8) {
$resource->resizeImage(32, 32, Imagick::FILTER_CATROM, 1.0, true);
}
} catch (Exception $e) {
echo $e->getMessage();
exit;
}
}
$resource->setImageCompression(Imagick::COMPRESSION_JPEG);
$current = $resource->getImageCompressionQuality();
if ($is_compression) {
$resource->setImageCompressionQuality($current);//压缩质量
}
if (!empty($new_jpg_filename_path)) {
$jpg_file_name_path = $new_jpg_filename_path;
}
$resource->writeImage($jpg_file_name_path);
$resource->clear();
$resource->destroy();
}
/**
* jpg格式转换成webp格式
* @param $jpg_img_path [jpg图片的真实路径]
* @param $webp_img_path [webp图片的真实路径]
* @param int $q [图片的压缩质量]
*/
function do_jpg_transform_webp($jpg_img_path, $webp_img_path, $q = 65)
{
exec("cwebp -q {$q} {$jpg_img_path} -o $webp_img_path");
}
/**
* 获取图片的质量
* @param $fileName [图片的具体路径]
* @return int[图片的质量]
*/
function get_img_quality($fileName)
{
$resource = new Imagick($fileName);
$resource->setImageCompression(Imagick::COMPRESSION_JPEG);
$current = $resource->getImageCompressionQuality();
$resource->clear();
$resource->destroy();
if (empty($current)) {
$current = 65;
}
$resource->clear();
$resource->destroy();
return $current;
}
//调用方式
//原始图片，连续用数字命名 ！如 1~10张图片,就1.jpg~10.jpg
$jpg_dir = './image/';//[准备压缩的jpg图片路径,必须设置!]
//压缩出webp格式的图片
start_multi_jpg_transform_webp('./webp', 1, '_a', 0);
start_multi_jpg_transform_webp('./webp1', 1, '_a', 1);
start_multi_jpg_transform_webp('./webp2', 1, '_a', 2);
start_multi_jpg_transform_webp('./webp3', 1, '_a', 3);
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