ThinkPHP5.0 怎么实现图片上传生成缩略图?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
代码如下所示:
<?php namespace app\common\controller; use app\common\model\Goods; class Tools { public static function upload_goods_img($whereName="", $width="", $height="") { // 打开图片的相对路径 $imgpath = config('img_path'); // 绝对路径 $imgRootPath = config('imgRootPath'); $storeId = '自定义'; $merchantId = '自定义'; $old_filename = $storeId . $merchantId . time(); $filename = $storeId . $merchantId . time() . mt_rand(1000, 9999); $type = Goods::upload($whereName, $old_filename); if($type) { $savepath = $imgRootPath . '/' . $whereName . '/' . $filename . '.' . $type; $thumbfile = $filename . '.' . $type; $thumbName = $imgpath . '/' . $whereName . '/' . $thumbfile; $image = \think\Image::open($imgpath . '/'. $whereName .'/' . $old_filename . '.' . $type); $image->thumb($width, $height, \think\Image::THUMB_FIXED)->save($thumbName); $data = [ 'access_url' => $imgRootPath . '/' . $whereName . '/' . $filename . '.' . $type, 'filename' => $thumbfile, ]; return $data; } } }
调用:
class Goods { public function upload_sku() { $whereName = 'goods/sku'; $width = 750; $height = 750; $data = Tools::upload_goods_img($whereName,$width, $height); return returnJson(1, '上传成功', $data);; } }
PS:下面在看一段代码tp5中上传图片方法,并生成相应缩略图的方法
//接收上传文件的name $file = $this->_req->file("upload_head_image"); //将上传的文件移动到public/uploads/user $info = $file->validate(['size'=>5242880,'ext'=>'jpg,jpeg,png'])->move(ROOT_PATH . 'public' . DS . 'uploads' . DS . 'user'); if($info){ $pic = new \app\home\model\User(); $pic_url = $pic->thumbImage($file,$info); $user['portrait'] = 'uploads/user/'.$pic_url; //print_r($pic_url);exit(); } ///model中代码如下 /** * [生成用户头像缩略图,180、50] * @param [type] $file [获取上传文件$_FILE] * @param [type] $pic [上传文件的路径] * @return [type] [返回处理后的文件路径] */ public function thumbImage($file,$pic){ $image = \think\Image::open($file); $getSaveName = str_replace('\\','/',$pic->getSaveName()); $portrait_thumbnail_180= 'uploads/user/'.str_replace($pic->getFilename(),'180_'.$pic->getFilename(),$getSaveName); $image->thumb(180,180,\think\Image::THUMB_CENTER)->save(ROOT_PATH . 'public' . DS . $portrait_thumbnail_180,null,100,true); $portrait_thumbnail_80 = 'uploads/user/'.str_replace($pic->getFilename(),'80_'.$pic->getFilename(),$getSaveName); $image->thumb(80,80,\think\Image::THUMB_CENTER)->save(ROOT_PATH . 'public' . DS . $portrait_thumbnail_80,null,100,true); $portrait_thumbnail_50 = 'uploads/user/'.str_replace($pic->getFilename(),'50_'.$pic->getFilename(),$getSaveName); $image->thumb(50,50,\think\Image::THUMB_CENTER)->save(ROOT_PATH . 'public' . DS . $portrait_thumbnail_50,null,100,true); if ($image) { return $getSaveName; } }
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