在服务器上调整图像大小 [英] Resize image on server

问题描述

我制作了一个负责上载图像的文件，然后将该图像移动到服务器中的文件夹中.我想我无法直接在$ _FILES数组中调整图像的大小，因此我认为必须在放入服务器后调整图像的大小，所以我的问题是，如何调整服务器中图像的大小?

I made a file that is in charge of uploading images, this images are then moved to a folder in the server. I think I can't resize the image directly in the $_FILES array so I think I must resize the image after being in the server, so my question is, how can I resize images that are in the server?

这是我拥有的代码的一部分:

This is part of the code I have:

//This is after getting target which is the file saved on the server

move_uploaded_file($_FILES[$str]['tmp_name'], $target);

scale_image($target);

现在使用scale_image()函数

Now the function scale_image()

function scale_image($image)
{

    if(!empty($image)) //the image to be uploaded is a JPG I already checked this
    {
        $source_image = imagecreatefromjpeg($image);
        $source_imagex = imagesx($source_image);
        $source_imagey = imagesy($source_image);

        $dest_imagex = 300;
        $dest_imagey = 200;

        $image = imagecreatetruecolor($dest_imagex, $dest_imagey);
        imagecopyresampled($image, $source_image, 0, 0, 0, 0,
        $dest_imagex, $dest_imagey, $source_imagex, $source_imagey);

    }
}

但这似乎不起作用，它移动了文件但没有调整大小.

But this doesn't seems to work, it moved the file but not resized.

推荐答案

我没有在服务器目录中创建文件，所以这就是我所做的 move_uploaded_file($ _ FILES [$ str] ['tmp_name']，$ target); scale_image($ target，$ target);

I wasn't creating a file to the server's dir so this is what I did move_uploaded_file($_FILES[$str]['tmp_name'], $target); scale_image($target,$target);

现在使用scale_image()函数

Now the function scale_image()

function scale_image($image,$target)
{
  if(!empty($image)) //the image to be uploaded is a JPG I already checked this
  {
     $source_image = imagecreatefromjpeg($image);
     $source_imagex = imagesx($source_image);
     $source_imagey = imagesy($source_image);

     $dest_imagex = 300;
     $dest_imagey = 200;

     $image2 = imagecreatetruecolor($dest_imagex, $dest_imagey);
     imagecopyresampled($image2, $source_image, 0, 0, 0, 0,
     $dest_imagex, $dest_imagey, $source_imagex, $source_imagey);

     imagejpeg($image2, $target, 100);

  }
}

非常感谢大家，您给我的资源帮助我创建了此功能.

Thank you all very much, the resource you gave me helped me to create this function.

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