php图片大小调整并在上传时转换为jpg

Question

How to resize an image and convert to .jpg on upload? 如何调整图片大小并在上传时转换为.jpg？ Basically something like the post here 基本上像这里的帖子

But i need to convert to JPG... 但是我需要转换为JPG ...

I tried imagejpeg() instead of imagepng() but it still saves it as png. 我尝试使用imagejpeg()而不是imagepng()但是它仍将其另存为png。

Answer 1

It that thread that you linked to, the accepted answer is converting to png like this: 您链接到的那个线程，可接受的答案将转换为png，如下所示：

imagepng($newImage, $destFile);

Your code would need to be only slightly different: 您的代码只需稍有不同：

imagejpg($newImage, $destFile);

See the PHP docs and this thread for further reference: 请参阅PHP文档和该线程以获取更多参考：

Answer 2

有一个现成的类，您可以尝试-http: //wideimage.sourceforge.net/

Answer 3

您可以申请：

imagejpeg($this->image,$filename,$compression);