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In function you can use advance things to make its better use
You can pass argument in calling function
For passing argument you also have to declare parameter to the corresponding argument to pass value
Lets look an example
output:
orange
Here,you see that what you give inside calling function shows as output
In function define we use a variable named $fruit inside () which is reserved for parameter of a function,here we can use variable which is parameter of function
Here,in calling function we can pass data,we pass orange,inside () of calling function,we can pass data from calling function like this,which data assign to $fruit in called function
In the body of function we can use parameter variable,here $fruit,we just show it here by echo $fruit
Lets go to another thing
return of a function
A function can use like a variable,which can pass data
5
Here,you see that output is 5,we use here return in calling function body,it is the exit point of a function,when function find reutrn in body,it stop execute function,stop there and goto called function
We can pass data by return function,here we see that we use 5 in ruturn function,we can use other type data also like string as example return "orange"
we see that we can use function as variable,here we use shownum() as variable and it show its result 5 as total value comes from function is 5
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