PHP-and-MySQL/C2/Switch-Statement/English

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Time Narration
0:00 Hello and welcome to this PHP tutorial on the SWITCH statement.
0:10 I'm going to show you a new exercise on this because its an important feature of PHP
O:16 Let's create the syntax quickly
0:20 The SWITCH statement is a substitute for the IF statement. Its a lot more neater and formattable choice although the input is an expression.
0:38 So, now let's input the value of something and then let's save the value equal to this
0:45 Then we can execute the code if it equals or matches this value
0:53 It's not a comparison technique. So, for comparing an IF statement for matching values and outputs that depend on the input, we're going to say SWITCH
1:03 Let's start
1:05 SWITCH is the basic code for it
1:10 Let's put an expression in here, for example, I will say Alex here
1:17 Let's create a mini program and I will explain it as we go
1:20 Just like the IFstatement we will put curly brackets here
1:26 Now let's look at the way to call each sort of check
1:30 We want to check the value here
1:33 Now we will put this in quotation marks
1:37 You can't even number obviously
1:42 So what we type is - case - the value of the case that we want to match. For example- Alex
1:54 Then we type a colon or a semi colon
1:58 And then the condition if the case has matched with the SWITCH expression you have picked
2:05 So, I will type - echo you have blue eyes
2:13 To end our case comparison we're going to use break and a semi colon
2:20 Remember that we've used the semi colon here but not here
2:25 Now the second case. Lets see how to do it
2:30 I'll type Billy and echo you have brown eyes
2:42 Okay, and then break and semi-colon
2:47 This is like an integrated IF. That is I could say - IF your name is Alex then echo you have blue eyes or ELSE IF your name is Billy you have brown eyes
3:00 Probably for some people it's easy to do it this way. It's a lot more readable but it's a matter of choice
3:11 Okay we got no more cases, I'm just going to use Alex and Billy for this example
3:20 Here I will say default which will echo out - I don't know what color your eyes are
3:29 Okay, we don't need a break after this because there are no more cases
3:38 Obviously, there's no break after it cause there are no more options to chose from
3:43 Okay, so, we've got our SWITCH here. Let's give it a go
3:48 Now I'm going to replace this ALEX here with a variable, to build our program
4:00 So I type name equals, and I will let you decide that
4:05 Then I'll say name, here
4:07 So you see this is how we incorporate a variable here
4:11 You should know how to do that by now
4:13 So, let's start and see how this will work
4:18 You'll say switch, you'll take this expression, which is equal to Alex
4:24 Basically, this is the case which equals to Alex and it'll echo this. The break is to end it
4:32 And this is the case, Billy and it'll echo this and end with a break
4:39 If the name is say, Rahul, the default will echo - I don't know what colour your eyes are
4:47 Okay, so let's try running this
4:49 Just to revise
4:52 We can see that Alex matches to Alex matches to the output
4:57 What you can do is you can enter as many lines of code here as you like. This break determines where the case ends
5:05 An IF statement needs curly brackets to end a block
5:12 However, here break determines the end of the block. These are called blocks, by the way.
5:17 So, let's change this to Billy and let's see what happens
5:22 You have brown eyes - exactly what we determined here
5:28 Okay, now I'll change this to Kyle.....and refresh, I don't know what colour your eyes are, because there is no block that states Kyle's eye colour in our program feature
5:45 So, that's basically the SWITCH statement
5:47 Try it out. Some people don't like using it, some prefer using it
5:50 It's probably much faster than the IF statement. It's easier to control. It looks a lot better. So it's really up to your personal choice
5:56 Thanks for watching. This is Arvind for the Spoken Tutorial Project, signing off. Goodbye.

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