#Day 9
##Ben
###Is Set
isset(); will return if the variable has been created yet.
Can be used to check if values in array have been set!!
###Empty
empty(); will return if a variable is empty.
Can be used to see if an index in an array is empty.
Empty values include empty string ' ', 0, false, and null.
NOTICE
0 and false are the only two values that will return true for isset(); and empty();!!
###Serializing
YOu can take an array and turn it into a string by Serializing it!!
serialize(); & unserialize(); will turn and unturn an array into a string.