Question about links

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  Janaki Raman: Hi Friends,
  
  I have a question about links?
  
  I am working with one of my client website www.example.in/index.html
  
  Initially they run a website with  ;.php links. now they changed .php into .html for last 1.5 months i am working on this website. Still google indexing .php links only.
  
  My question is how to get index .html links in google.  ;
  
  Can any one have a solution for this problem
  
  
  Thanks
• 
  Jan Stüber: 301 Redirect?
• 
  Janaki Raman: Thank You Jan stuber
  
  I have more than 50 links in that website. all the .php links are already indexed. if i go with 301 redirect google wont spam my site ?  ;is this right choice to go with 301 ? Suggest me
• 
  Jan Stüber: So, you got the same content on php and html version? ;
• 
  Jan Stüber: Redirect .php to .html if possible via 301 ;
• 
  PromozSEO: Have you tried redirection? Is it working?
  The site might have used URL rewriting technique. Do not use redirect you may land on an endless loop and the page may not open. Instead, use rel canonical and make sure the URL version you want Google to index is mentioned there in the canonical tags of each pages. Do not keep any other version on you source codes and xml files. Fetch them on Search Console.
• 
  Janaki Raman: Thank You Friends.....