get method passing value just view address bar , post cant 
view
get passing limit value, post pass large amount 

 if you used get or post method... retrive the value 
through request method

GET : When you use this method then variables are view in 
the addressbar. If you want security then don't use this 
method. That mean in this method have not security. When 
you passing value by this method then only 255 char you can 
pass. Its useful when you want to bookmark page.

POST: When you passing value by this method then you can 
not view value in addressbar of explorer. It is secure then 
GET. This method have not any limit for passing value. You 
can not bookmark link by this method. If you want to server 
log then you can not get by using this method.

REQUEST: When you use GET and POST method then by REQUEST 
method you can make request to server and get value of 
variable.

$_REQUEST can also be used to access cookies.

Hi All:

GET 
A : Since information is available on Address bar ,this can 
be boomarked( add to favorites list).
B:Limited Information can be sent. (i think its 4KB)
C:Nosecure
D:Used for query somthing (like when u want to fetch data 
record)
E:Default addedd in request.(if u dont mention any method 
in form tag)

Post: 
A: Request Content sent as part of body of request.
B:unlimited data can be sent
C:Secure- cant be book marked.
D:Used to save data (insert/delete/update ..less used with 
select clause)



Post

POST method send information through HTTP while GET method 
send information through url. and REQUEST is use When we 
don't know what method is used in first page and we want to 
take these variable on second page.