When creating a Facebook account, the system automatically assign the users an identification number, known as Facebook Id.Facebook Allow the user replace their Id to username.
FOLLOW THESE STEPS:
STEP 1 :
First Login Facebook.
STEP 2 :
Then Go Profile Which You Want You Want To Find Profile Data.
STEP 3 :
You See On Button URL.. example: www.facebook.com/****************
STEP 4 :
Now Remove www And Put graph..Now URL Like This : graph.facebook.com/*******************
STEP 5:
Now you see data of it .LIKE THIS :example: {"Id": "***************""Name" : "ABC XYZ","First Name" : "ABC","Last Name" : "XYZ","Link" : "www.facebook.com/****************","Locale" : "en.USA","Gender" : "Male"}
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