I am creating a Google Maps Social Application.. I have a basic marker that has a blank square in between it where I need to put the user uploaded picture.
I already have the user uploaded pictures. Now How do I create these dynamic markers using PHP.. The accepted pictures are jpeg and png.
I have heard of the PHP GD Library and would like to know how I can accomplish the task..
You can create the base image with this :
imagecreatefromjpeg() & imagecreatefrompng()
you can determine which one to use by getting the image information with getimagesize().
After you have your base image you can do the same with the user image and copy it to the base image with imagecopyresized()
You can see a couple of useful examples on the user comments at: php.net/imagecopyresized
I hope this answers your question, if not just ask me and I'll find the time to give you a more complete answer.
Related
I'm working on a PHP project where the user can upload an image and preview that image on a product (Ex. mug, pillow). I have done almost all that is required to implement this except wrapping the uploaded image around the product image. I have done extensive search on that, but could not find any help. Could anyone show me the way please ?
At the moment I am using the GD library.
Best example for what I need is : http://www.zazzle.com/polyester_throw_pillow_16_x_16-189271445174968378
I am not sure how they are doing that.
EDIT :
My area of interest is how they are blending the image according the product shape
I think it's answered here: Merge two PNG images with PHP GD library
Just make sure that the image uploaded by the client is smaller than your product image
May you please share any resourceful links I could use to achieve my userflow described in the title? I wish to create a facebook cover maker that adds a filter (a picture of a USA Flag) to the uploaded photo. After some research, I believe what I need is a PHP image resizer and watermarker and manipulation tool.
This is almost what I desire: http://www.adylevy.com/demo/imgUpload/
Visit website
Upload image
Image appears
Replace "Rotate" with "Filter XYZ"
A watermark appears
Download
This is what I was looking for: http://phpthumb.sourceforge.net/
Here is an alternative too: https://code.google.com/p/timthumb/
I have a form where the user can upload an image and that image gets displayed on a webpage. I use the Wideimage library to resize the image and to rename the image. In the display code I have the name and type specified, but the problem is I don't know how to convert the image type in Wideimage so that it will display properly. I hope that makes sense.
Another option that would work is if I could somehow get the image type of the file name and then use that in the display code. I was looking at the php function getimagesize() but I couldn't quite get it working, that is, I had to run a bunch of if statements to see what type of image it was. It didn't seem practical.
Image this scenario:
There is a picture locally in my server, where a sketch is displayed, and there is a "blank hole" area on it.
Then, a user can upload another picture to my server.
What i'm trying to achieve is this:
After image upload is finished, the first image (the one with the "hole") is displayed, and behind it is displayed the user's photo, so that you can see it through the "blank hole" area of the first photo.
Then the user can move his picture (drag & drop style) so he can choose which area of it is visible through the "blank hole".
Then i would like to save the result - by merging the 2 photos or keeping the position of the user's picture in a db so i can display it again later.
(Something like this more or less)
What kind of technollogy should i look for? I'd guess javascript(for the drag & drop) or html5 or php(for merging the photo)?
Are there any libraries that i can use?
I hope my explanation isn't too messy, i didn't even know how to google for it.
I don't know if there are better solutions (and I suspect there are), but I suspect all of this can be done with not too much trouble. Here's a rundown of one way to approach the problem:
Use a JavaScript-powered "upload widget" such as uploadify to enable your user to upload "his" image to the server. The server will do some processing on the image (e.g. resize and crop to suitable dimensions) and save it using e.g. PHP's gd library. It will return a URL to the "prepared" image back to the browser -- all of this through AJAX.
The browser then has a URL to the user's image, so using more Javascript you can dynamically add an element that displays it inside the page and allow the user to move it around with e.g. jQuery draggable. Compositing the draggable image behind your static content (the image with the "hole") is a detail you will have to take care of using a combination of HTML, CSS and again Javascript.
When the user is done, use an AJAX call (e.g. again jQuery) to inform the server of the image's positioning (this will be available through the facilities of the Javascipt framework you have selected). The server can then "compose" the two images together (gd or something equivalent once more) and return to the browser a URL through which the final product can be accessed.
Of course there are lots of details to take care of here, but knowing exactly what the plan is should help you get started.
Have a look at the PHP GD extension. If it's installed, it's pretty easy to have an image (with a transparent center) to be merged on top of a second image that a user would upload.
Have a look at http://php.net/manual/en/function.imagecopymerge.php
Ok to get you started, yes use a JavaScript drag and drop module for the placing of the image. You can record the x /y cordinates relative to the container. Do the image merging with a PHP image library / Class. Something like this : http://www.phpclasses.org/package/3930-PHP-Generate-an-image-from-the-combination-of-2-images.html
I've searched for ages for a solution, but I can't really find the solution to fit my needs.
So here's the story. Im creating a website and I really want to add watermarks to the downloaded images.
Yesterday I was browsing in a website called 9gag. If you haven't heard this website before, its a comic based website, and I found out that when you download an image, or access an image from anywhere else except their website, there's a 'watermark/banner' at the bottom of the image.
For example take this image:
link , notice no banner at the bottom of the image.
If you right-click, 'Copy image URL' , you get this link: image . See the banner now?
Im very confused on how they do it, and it would be great if we could use this on our websites.
Anyone with any ideas? Is it using any type of CGI?
P.S: I Wasn't sure what tags to add, So if anyone knows a better tag combination, please do edit it.
This effect is just a css trick. The image itself actually contains the watermark at the bottom, but the image tag is wrapped in a block that hides (overflow:hidden) the bottom 42 pixels of the image when it's being displayed in the page.
There are other things you can do that are more sophisticated (for instance, have the image served via a php script and comparing the http referer
header("content-type: image/jpeg");
if (!isset($_SERVER['HTTP_REFERER'])){die("alert('Restricted Access!');");};
$_u=parse_url($_SERVER['HTTP_REFERER']);
$_u=preg_replace("/(www.)/i","",strtolower($_u['host']));
$_i=$_SERVER['HTTP_HOST'];
$_i=preg_replace("/(www.)/i","",strtolower($_i));
if ($_u != $_i){
//handle this with gd or redirect
}
) but this will only work if someone tries to load the image from a different website or if they go to the image url... generally save-as will save the image from the browser's cache, so the css trick might be the best option you have (or a combination of these options). Fundamentally keep in mind that anything you show on the web can be captured (the code above isn't foolproof, and you can always prtsc).
GD library of php will help you doing that.
You'll need to create a new image using imagecreate function but adding some more "space" to the original size. Example: if I have an image of 200x200 (which you can retrieve using gd functions too) you'll need to create a 200x220px image using that function
Fill the new image with that gray color using imagefilledrectangle function
Copy the original image into the new one using imagecopy
Set the header's content type to image/type png gif etc..
Output to the image using imagepng or any other function that has the format you want.
I've had success with JQuery Watermark:
Jquery Watermark