j25: joomla function

JRequest::getVar()

$address = JRequest::getVar('address');  -data only 

$address = JRequest::getVar('address', 'Address is empty'); -default param

$address = JRequest::getVar('address', 'default value goes here', 'post'); - source param

$address = JRequest::getVar('address', 'default value goes here', 'post','validation type',mask type);

validation type (INT,INTEGER,FLOAT,DOUBLE,BOOL,BOOLEAN,WORD,ALNUM,CMD,BASE64,STRING,ARRAY,PATH,USERNAME)

mask type :

 - JREQUEST_NOTRIM - prevents trimming of whitespace
 - JREQUEST_ALLOWRAW - bypasses filtering
 - JREQUEST_ALLOWHTML - allows most HTML. If this is not passed in, HTML is stripped out by default.

JRequest::get( 'post' )

To receive a whole array filtered. If you would want to get the POST data