file handling

wanaka

For security I have some network diagram that I put into a non webroot folder.

However the disadvantage of doing this user need to click either the download or open dialog box.

I was thinking is it possible to use a php function to read the entire binary file and construct an html like this

</html>

steadyguy

If you have the GD lib installed (most installations come with it), try:
<img src="imager.php" />

Where imager.php has something like this in it:

$path = '/your/path/goes/here/image.jpg';
$image = createimagefromjpeg($path);
header('Content-Type: image/jpeg');
imagejpeg($image);
imagedestroy($image);

You can read more about the image functions and how to use them at PHP.net

yelvington

Your solution doesn't make sense because HTML doesn't work that way. IMG tags refer to source HREFs, period.

If you want PHP to serve up an image, output an appropriate Content-type header:

$binarycrud = file_get_contents('/home/junk/foo.jpg');
header('Content-type: image/jpeg');
echo $binarycrud;

But why would you do that? Why don't you just put the file where the Web server can find it and let it do its job?

steadyguy

The solution does work ... and there are publishers and authors willing to charge you money to show you that it does:
PHP Graphics, Kent, Slenc, & Sweat. Published by Wrox. The code I posted is taken almost directly fom the book.

Regarding <img> tags, Take a look at the W3C specification; the href attribute is not supported for <img> tags.

And why you would want to do it this way? To paraphrase wanaka: for security reasons, the file is outside the web root. PHP will still be able to access it, though the web user without permissions will not. Additionally, with the method I posted, the graphic can be modified, watermarked, scaled, and more, all on the fly, based on user input.

And as for headers ... take a longer look at my code.

yelvington

Steadyguy, I wasn't responding to your post, in fact I have not read it. I was answering wanaka's question. If you go back and read what I said with that context, you'll see that I am telling wanaka to NOT embed binary data in HTML.

steadyguy

Yelv ... No worries, mate.