static function clip_topic($width, $height, $pic, $location = 'center', $domain)
{
$s = new SaeStorage();
$img = new SaeImage();
$w = $width;
$h = $height;
if (!($img_data = $s->read($domain, $pic))) {
echo $domain . "&&&&" . $pic;
die('图片读取失败！');
}
$img->setData($img_data);
//获取预设剪裁高宽比
$x2 = $h / $w;
if (!($image_size = $img->getImageAttr())) {
die('获取属性失败！');
}
//图片实际高宽比
$x1 = $image_size[1] / $image_size[0];
//图片实际高宽比和预设高宽比之比
$x12 = $x1 / $x2;
if ($x12 < 1) {
//如果实际图片比预设值高
if ($location == 'center') {
//用halb值决定其剪裁位置
$halb = 0.5 - $x12 / 2;
} elseif ($location == 'right') {
$halb = 1 - $x12;
} else {
$halb = 0;
}
$img->resize(0, $h);
//按预设高度等比缩小
$img->crop($halb, $x12 + $halb, null, null);
//图片居中预设宽度剪裁
} else {
//如果实际图片比预设值宽
$x21 = 1 / $x12;
//将比例反转
if ($location == 'center') {
//用halb值决定其剪裁位置
$halb = 0.5 - $x21 / 2;
} elseif ($location == 'right') {
$halb = 1 - $x12;
} else {
$halb = 0;
}
$img->resize($w);
//按预设宽度等比缩小
$img->crop(null, null, $halb, $x21 + $halb);
//图片中间预设高度剪裁
}
if (!$img->improve()) {
die('图片优化失败!');
}
$result = $img->exec();
if ($result == false) {
echo "剪切失败！";
var_dump($img->errno(), $img->errmsg());
} else {
return $result;
}
}
function getThumbImage($filename, $width = 100, $height = 'auto', $type = 0, $replace = false)
{
$UPLOAD_URL = '';
$UPLOAD_PATH = '';
$filename = str_ireplace($UPLOAD_URL, '', $filename);
//将URL转化为本地地址
$info = pathinfo($filename);
$oldFile = $info['dirname'] . DIRECTORY_SEPARATOR . $info['filename'] . '.' . $info['extension'];
$thumbFile = $info['dirname'] . DIRECTORY_SEPARATOR . $info['filename'] . '_' . $width . '_' . $height . '.' . $info['extension'];
$oldFile = str_replace('\\', '/', $oldFile);
$thumbFile = str_replace('\\', '/', $thumbFile);
$filename = ltrim($filename, '/');
$oldFile = ltrim($oldFile, '/');
$thumbFile = ltrim($thumbFile, '/');
//兼容SAE的中心裁剪缩略
if (strtolower(C('PICTURE_UPLOAD_DRIVER')) == 'sae') {
$storage = new SaeStorage();
$thumbFilePath = str_replace(C('UPLOAD_SAE_CONFIG.rootPath'), '', $thumbFile);
if (!$storage->fileExists(C('UPLOAD_SAE_CONFIG.domain'), $thumbFilePath)) {
$f = new SaeFetchurl();
$img_data = $f->fetch($oldFile);
$img = new SaeImage();
$img->setData($img_data);
$info_img = $img->getImageAttr();
if ($height == "auto") {
$height = $info_img[1] * $height / $info_img[0];
}
$w = $info_img[0];
$h = $info_img[1];
/* 居中裁剪 */
//计算缩放比例
$w_scale = $width / $w;
if ($w_scale > 1) {
$w_scale = 1 / $w_scale;
}
$h_scale = $height / $h;
if ($h_scale > $w_scale) {
//按照高来放缩
$x1 = (1 - 1.0 * $width * $h / $w / $height) / 2;
$x2 = 1 - $x1;
$img->crop($x1, $x2, 0, 1);
$img_temp = $img->exec();
$img1 = new SaeImage();
$img1->setData($img_temp);
$img1->resizeRatio($h_scale);
} else {
$y1 = (1 - 1 * 1.0 / ($width * $h / $w / $height)) / 2;
$y2 = 1 - $y1;
$img->crop(0, 1, $y1, $y2);
$img_temp = $img->exec();
$img1 = new SaeImage();
$img1->setData($img_temp);
$img1->resizeRatio($w_scale);
}
$img1->improve();
$new_data = $img1->exec();
// 执行处理并返回处理后的二进制数据
if ($new_data === false) {
return $oldFile;
}
// 或者可以直接输出
$thumbed = $storage->write(C('UPLOAD_SAE_CONFIG.domain'), $thumbFilePath, $new_data);
$info['width'] = $width;
$info['height'] = $height;
$info['src'] = $thumbed;
//图片处理失败时输出错误码和错误信息
} else {
$info['width'] = $width;
$info['height'] = $height;
$info['src'] = $storage->getUrl(C('UPLOAD_SAE_CONFIG.domain'), $thumbFilePath);
}
return $info;
}
//原图不存在直接返回
if (!file_exists($UPLOAD_PATH . $oldFile)) {
@unlink($UPLOAD_PATH . $thumbFile);
$info['src'] = $oldFile;
$info['width'] = intval($width);
$info['height'] = intval($height);
return $info;
//缩图已存在并且 replace替换为false
} elseif (file_exists($UPLOAD_PATH . $thumbFile) && !$replace) {
$imageinfo = getimagesize($UPLOAD_PATH . $thumbFile);
$info['src'] = $thumbFile;
$info['width'] = intval($imageinfo[0]);
$info['height'] = intval($imageinfo[1]);
return $info;
//执行缩图操作
} else {
$oldimageinfo = getimagesize($UPLOAD_PATH . $oldFile);
$old_image_width = intval($oldimageinfo[0]);
$old_image_height = intval($oldimageinfo[1]);
if ($old_image_width <= $width && $old_image_height <= $height) {
@unlink($UPLOAD_PATH . $thumbFile);
@copy($UPLOAD_PATH . $oldFile, $UPLOAD_PATH . $thumbFile);
$info['src'] = $thumbFile;
$info['width'] = $old_image_width;
$info['height'] = $old_image_height;
return $info;
} else {
if ($height == "auto") {
$height = $old_image_height * $width / $old_image_width;
}
if ($width == "auto") {
$width = $old_image_width * $width / $old_image_height;
}
if (intval($height) == 0 || intval($width) == 0) {
return 0;
}
require_once 'ThinkPHP/Library/Vendor/phpthumb/PhpThumbFactory.class.php';
$thumb = PhpThumbFactory::create($UPLOAD_PATH . $filename);
if ($type == 0) {
$thumb->adaptiveResize($width, $height);
} else {
$thumb->resize($width, $height);
}
$res = $thumb->save($UPLOAD_PATH . $thumbFile);
$info['src'] = $UPLOAD_PATH . $thumbFile;
$info['width'] = $old_image_width;
$info['height'] = $old_image_height;
return $info;
//内置库缩略
/* $image = new \Think\Image();
$image->open($UPLOAD_PATH . $filename);
//dump($image);exit;
$image->thumb($width, $height, $type);
$image->save($UPLOAD_PATH . $thumbFile);
//缩图失败
if (!$image) {
$thumbFile = $oldFile;
}
$info['width'] = $width;
$info['height'] = $height;
$info['src'] = $thumbFile;
return $info;*/
}
}
}
<?php
if (isset($_FILES["userAvatar"])) {
$files = $_FILES['userAvatar'];
$name = 'avatar-' . time() . '.jpg';
$form_data = $files['tmp_name'];
$s2 = new SaeStorage();
$img = new SaeImage();
$img_data = file_get_contents($form_data);
//获取本地上传的图片数据
$img->setData($img_data);
$img->resize(260, 260);
//图片缩放
$img->improve();
//提高图片质量的函数
$new_data = $img->exec();
// 执行处理并返回处理后的二进制数据
$s2->write('upload', $name, $new_data);
//将upload修改为自己的storage
$url = $s2->getUrl('upload', $name);
exit("{'state':'200','headimgurl':'" . $url . "'}");
}
