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                ### file_image_thumb() 圖像縮略函數 注意事項:php需要開啟gd庫擴展 ~~~ /** * 圖像縮略處理 * 可處理圖像類型jpg和png * 如果原圖像寬度小于指定寬度, 直接復制到目標地址 * 如果原圖像寬度大于指定寬度, 按比例縮放至指定寬度后保存至目標地址 * * @param string $srcfile * 原圖像地址 * @param string $desfile * 新圖像地址 * @param int $width * 縮放寬度 * @return mixed string:縮略圖地址; error:調用縮略方法失敗; */ public function file_image_thumb($srcfile, $desfile = '', $width = 0) ~~~ 接收參數: | 參數名 | 是否必須 |默認值 |備注| | --- | --- |--- |--- | | srcfile | 是||表單提交的文件名| | desfile | 否 |image|上傳的文件類型 | | width | 是||縮放寬度| 示例: ~~~ <?php /** * @className:圖片處理類 * @description:上傳圖片,刪除圖片 * @author:calfbb技術團隊 * Date: 2017/8/23 * Time: 下午3:25 */ namespace Addons\db\controller; use Framework\library\File; class Files { /** * 上傳圖片 */ public function uploadFile(){ global $_G; $file=new \Framework\library\File(); $result=$file->file_upload($_FILES['file']); if(!empty($_POST['width']) && $result['code']==1 && $result['data']){ $result=$file->file_image_thumb(ATTACHMENT_ROOT . '/'.$result['data'],'',$_POST['width']); } show_json($result); } } ~~~ 成功返回: ~~~ { "code": 1, "message": "success", "data": "images/2017/12/j0oQ19Gt0Gv9kAK4w0QvTQ1ZM2f046.png" } ~~~ 錯誤返回: ~~~ { "code": "-1", "message": "error", "data": "原圖像不存在" } ~~~
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