PHP-Reference Variable

Reference variable are those that have a reference to the value stored in them for example

 $name = 'fruit'; //Generic Varible  
 $$name='banana'; //Reference Variable  
 echo $fruit;   
 //Outputs Banana  

Here $name is a variable which stores name 'fruit' and in turn there is a memory location in your system when you run this program which is labelled as 'fruit' in which value is stored as $$name or $fruit.