php -expression ( Lecture-10 )

hey guys what's going on is clever sticky and in this Lecture, we're going to

learn about this piece which statement [NOISE] so this is the basics in

texts of the switch statement to have a cure switch followed by the expression

inside the around records and between the curly brackets we have here it's

the case followed by the valley to enter Collins and break for by the semicolon

so what this means is if the expression of valleys to zero so then we want to

following cold dessicated and then we end the execution with a cure break if

we don't use the cured break after code (Dallas Website Development) then all the following cases

where also be evaluating it and the code will also be executed and I'll give

you an example of how that works a little bit later now the default cured it

will be executed if none of the other this matches so if our expression

will value to for example five then that code goal be executed so it is i

wanted to use break if you don't want all the following cases to be as luck

and the switch statement can be written and an alternative form like so so

instead of early brackets, we can use a column and instead of the ending

currently bracket we can also use and switch followed by the semicolon so

the switch statements index for you and now let's go ahead and I create a

little script to see how warps and practice [NOISE] so I'm just going to

create and our folk animals and I'm just going to put three animals and it

can a dog and duck and then I'm going to use the switch statement and for

the expression I'm going to put in our [a COUGH] and then I'm going to use

area and the or a trend function to pick out a random key from there and so

at this point king randomly take out cad Dugard duck and first the value

which we're going to get so we're going to write case I had colony coal now

so I'm just going to put in this sounds with the animals will make in for

cases which are a dog and dog ok for the documenting put echo with and final

we can forget to break that and place duck from enough with a is the break

and that's a basic program and I'm going to go ahead and running no and i

refreshed the page keeps refreshing and so as you can see randomly puts out

different animals sounds based on the can a kind of random art and value

which has been text out from the rain so that's a basic as an example of the

switch statement now let me show you a for example if we added the default

you're here and we get to say something like any model why did around for your

life so the good idea to run for your life we haven't an animal and here i

would put something like wants [UM] or and now if-if not of the other cases

had the magic so if it's not a and it's not a dog duck it's not a dog then

the default cases executed which are monster, in that case, I know animal

detected around for your life his executed and if we keep a hidden random is

you can see it keeps selecting at once in a while randomly so that's how the

default works and so now (Dallas Website Development)I want to show you an example if we simply don't

use breaks and it's going to give you I'm going to pick create a very boy

named speed I'm going to save sixty-five and so this is going to be like a

car example where we're going to be speeding so I'm going to see the switch

speeding and then I am I going to type all of that I have all these taped up

already but basically is going to give you a different message based on what

kind of same speed you have here so in a case in sixty-five and the age which

is the valley right now we're going to say you're going the speed limit

response.