Develop Reference

How can i create Featured Image function in core php not in wordpress

There is a function for every page in wordpress so if we share link in other websites then it fetches title, description and featured image of that page / post, but i wanna make this functionality in core php not in wordpress, how can i make it so when i share link to other website then it fetches only that one featured image ? without featured image functionality it fetches only logo.
please could you help me?

If I understand correctly, all you need to do is add OpenGraph on your PHP/HTML header.
<meta property="og:title" content="Your desired title" />
<meta property="og:description" content="Some sentences here" />
<meta property="og:url" content="https://www.yourdomain.com/filename.php" />
<meta property="og:site_name" content="rumahweb.com" />
<meta property="og:image" content="https://www.yourdomain.com/featured-image.png" />
Insert above code (and adjust the value as necessary) inside your HEAD section of your HTML/PHP file.

Twitter card not working even after validation

I want to add a Twitter button on my website to share content, as well as a Twitter card. I've already added the meta tags.
Here is the code for my share button:
Tweet
This is the code for the meta tags I've added as well:
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="#nytimes">
<meta name="twitter:creator" content="#SarahMaslinNir">
<meta name="twitter:title" content="When Great Minds Don’t Think Alike">
<meta name="twitter:description" content="How much does culture influence creative thinking?">
<meta name="twitter:image" content="http://176.32.230.11/trialandtest.com/assets/images/profile-img.jpg">
Here is the link to my site:
http://176.32.230.11/trialandtest.com/
I'd be grateful if someone could assist me as to where I am going wrong, because I have my URL whitelisted on Twitter, but when I try to share something it does not share the content on the preview window and shares the old one.

Your share url should be dynamic. I think when you click on the share button it is taking your static url ie. http://176.32.230.11/trialandtest.com

google+ pick wrong image in dialog when I share

I am trying to make a button share google+ with title, description and image. Everything works fine but only image that google+ pick wrong.
Here my code:
<meta property="og:type" content="website" />
<meta property="og:title" content="{title}" />
<meta property="og:image" content="{image}" />
After that I test and know that Google+ will pick image with largest size in your page.
Do you have any solution?

How to change the image thumbnail dynamically by using Facebook web SDK

Facebook development newbie.
I have added the meta tags to the html file which I want to share to Facebook.
like:
<meta property="og:type" content="article"/>
<meta property="og:title" content="title"/>
<meta property="og:description" content="description"/>
<meta property="fb:app_id" content="23232323323232"/>
<meta property="og:image" content="https://fajfladjfaljafl.jpg/>
I want to make the image thumbnail in Facebook profile different for different people. For example, people can do a small test here then share the result to Facebook, the image thumbnail should be the test result of that person. So how can I do this.
Now I am thinking to generate a new webpage within specific meta property for that person every time. But this's so dump!
Can I change <meta property="og:image" content="https://fajfladjfaljafl.jpg/> automatically when people share it to Facebook? or any other ideas?
Thank you very much!!
Hi everyone:
I am doing this via feed dialog. As what #Mosh Feu and #CBroe said, it doesn't make sense to change meta data.
I am using feed share link
https://www.facebook.com/dialog/feed?app_id=APP_ID&link=URL&picture=THUMBNAIL_URL&name=NAME&description=DESCRIPTION&caption=CAPTION&redirect_uri=REDIRECT_URI
to define the parameters every time.

Facebook still shows small thumbnail with og meta tags in place

I have a page on my website that is located at domain.com/mypage.html
I would like to do a link share with this link so that the ad is displayed but the whole image is still a link to our actual web page. The problem is that Facebook will still display the image in a small thumbnail like before they added the new larger link shares last year.
I have added all the og meta tags for the image, I have made sure the image has an aspect ratio of 1.91:1 with an actual size of 1200x627. The titles and description tags all have very little text so they are within the character limit.
I have refreshed the Facebook crawler's copy of the page with the Facebook Debugger/Linter tool.
Nothing I do changes how Facebook will display this link-share. It will never display in the larger format.
Here are meta-tags in mypage.html:
<meta property="og:image" content="http://www.domain.com/images/fb_ad.jpg"/>
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="627" />
<meta property="og:url" content="http://www.domain.com/mypage.html"/>
<meta property="og:title" content="My Title"/>
<meta property="og:description" content="My Description"/>