my iphone 5 display has broken and i want to know there is any procedure to replace iphone ,it is out of warrenty

One option is to have it repaired: https://www.apple.com/support/iphone/repair/screen-damage/

Not sure what you mean by "procedure to replace." How you would buy a new one depends on where you are located, whether you are under contract with a carrier for the old phone, etc. If you mean a procedure to move your data to a new phone, the following may help: Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support

At the Apple Store, I was quoted $129 to replace the display on my 5C last week. I would imagine it is similar for the 5.