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