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PHP createimagefromjpeg() How to include all image types


is there a way that i can use createimagefromjpeg() to save an image from a url but allow all image file types?

It seems obvious that createimagefromjpeg only allows jpeg / jpg.

Here is my current process:

    // create the image and save it
    $imagefile = iageURL;
    $resource = imagecreatefromjpeg($imagefile);
    // X amount of quality is the last number
    imagejpeg($resource, "images/covers/imagename.jpeg", 50);
    imagedestroy($resource);

This works great because it allows me to reduce the image quality. But i get an error when trying to use anything other than a jpeg / jpg.

Is there a way around this? Or perhaps a better method of saving images (at a reduced quality) from a url.

Craig.


Solution

  • You need to check the file type - the best way is to check the mime type if you can, then you can do a switch and utilize the other image creation functions in GD lib such as imagecreatefromgif() and imagecreatefrompng() etc:

    switch($mime_type) {
        case 'image/jpeg':
        case 'image/jpg':
            $img = imagecreatefromjpeg($filename);
            break;
        case 'image/png':
            $img = imagecreatefrompng($filename);
            break;
        case 'image/gif':
            $img = imagecreatefromgif($filename);
            break;
    }
    

    Another option is for you to grab the image's data into a string and use imagecreatefromstring() to create an image handle from raw data:

    $filename = 'http://yoursite.com/yourlogo.jpg';
    $img = imagecreatefromstring(file_get_contents($filename));
    

    From the manual: These types will be automatically detected if your build of PHP supports them: JPEG, PNG, GIF, WBMP, and GD2.