 
      
      equal()
	Check whether value_1 and value_2 have the same address	
	
equal(value_1, value_2)
value_1 (array|object)  — An array or an objectvalue_2 (array|object)  — An array or an object
boolean — Returns true if both addresses are equal, returns false if otherwise
a = array()
b = array()
c = a
 
equal(a, b)   ' Returns false
equal(a, c)   ' Returns true