About adding a watermark to a picture

I wrote a collection program to collect the pictures on the internet and get back a bunch of garbled characters.
Header ("Content-type:image/jpeg;charset=utf-8"), after which the normal picture can be displayed
Now I want to add a watermark to the picture.
I saved the captured picture directly to the directory and then loaded it as follows
$fp = @imagecreatefromjpeg (picture path);
$WP = @imagecreatefrompng (watermark path);
$res = Imagecopy ($fp, $wp, 0, 0, 0, 0,120,180);
Imagejpeg ($FP);
Now I want to not save to the directory directly with the watermark on the page to show what to do please give us your advice.

Reply to discussion (solution)

Don't quite understand, your data must have a place to keep?
PHP's Imagecreatefromjpeg () function supports the rfc2397 standard, which you can use

$mime = ' picture MIME type, such as image/png, Image/jpeg '; $base 64_content = Base64_encode (' picture content '); $uri = "data:{$mime};base64,{$ Base64_content} "; $fp = @imagecreatefromjpeg ($uri);

Or you can save the picture to a temporary folder, which is more convenient.

The program is on SAE and BAE.
Save the picture to throw into the storage relatively trouble
And I don't really want to save the picture
So to ask if you can directly add watermark output, without saving

Isn't there a imagecreatefromstring?

$fp = imagecreatefromstring (file_get_contents (' http://avatar.profile.csdn.net/9/D/6/1_dream1206.jpg ')); $wp = Imagecreatefromstring (file_get_contents (' http://avatar.profile.csdn.net/1/5/6/1_gilper.jpg ')); Imagecopymerge ($ FP, $WP, 0,0, 0, 0,120,180, imagepng ($FP);

Previously studied with ImageMagick watermark, the function is more powerful. Landlord can see

The forum is very good and very good understand a lot

Isn't there a imagecreatefromstring? PHP code?1234$fp = imagecreatefromstring (file_get_contents (' http://avatar.profile.csdn.net/9/D/6/1_dream1206.jpg ' ); $wp = Imagecreatefromstring (File_get_conten ...

Thank you so much, we've done it, and I haven't seen this function before.
Ask a question first, with
Header ("Content-type:image/jpeg");
Imagejpeg ($FP);
This way has already declared the file as a picture, not directly with the original HTML together, how to directly echo out of the picture in the HTML somewhere?
Write a separate Web page with an IMG tag. I know, but this is not the right time to use this, please consult other methods, thank you.

You can use an IFRAME without IMG, and you can also use CSS as a backdrop.

You can use an IFRAME without IMG, and you can also use CSS as a backdrop.
The situation is more special only on this page output no way to temporarily this bar 3Q

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