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I welcome you back again to another video lecture in PHP.

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And in this lecture we go ahead and look more into if else statement.

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So in the previous lecture we are able to discuss about if our statement.

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And we actually dive in and we learned a little bit about if statement.

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Now let's go ahead and put that into practice.

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So I will be using Sonic for our maximum number.

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Let's go ahead and look at maximum numbers.

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So let me go ahead and see.

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We have a function called Max.

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And uh is go here I have us to print out the maximum of all these numbers.

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If I refresh this we have it as the maximum number.

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Now we got to learn how to use if statements to achieve this.

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Now let's go ahead and remove whatever we have right in here.

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And now I want to use if else statements to do this.

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Now go ahead and create a function and a legal function name.

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Be get max.

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So we can be able to get the maximum number and the the score and the.

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Now add an if statement right in here.

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So I'm going to pass in some parameters I'm going to create two variables of num1.

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And then I'll create another one num two.

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So now we'll go ahead and create a function.

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Let's see if statement.

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And then we go ahead and uh see if let me see num one because we want to compare which of these numbers

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is greater than the other.

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So if num one is greater than

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Num2.

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Now we want to check we're going to return Num1.

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We're going to say return Num1.

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So go ahead and return no one else.

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Let's go ahead and put our statement then else we go ahead and return.

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None two.

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So go ahead and return.

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Num2 so we're a semicolon.

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And now we have this function we just created right in here.

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And this function will enable us to be able to select between two numbers.

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Now let's go ahead and echo out whatever we have.

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We go ahead and see echo get math.

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So we're calling the function right in here.

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So we can be able to input pitch in or pass in, so on parameters in a.

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Then go ahead and say the first one is 90, and then the next one is uh 180.

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And put a semicolon at the end.

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Now let's go ahead and refresh and check.

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We have 180 as the maximum.

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So if we go ahead and make this to be 219 and save let's refresh.

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We have 290 as the maximum.

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So this is just between two numbers.

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Um number one and number two.

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So what if we have like to select between three or 4 or 5 numbers.

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How can you be able to achieve this.

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You understand.

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How can you be able to achieve this.

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Now let's go ahead and uh, check out how can we go to do this if this is true between two or between

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3 or 4 numbers.

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So making that to be more complex now we're going to do is let's go ahead and uh, Comment on this so

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that we can be able to close this.

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So go right in here and increase this.

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So I just commented on this right now.

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Now what do we need to do.

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Let's go over here.

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And uh I'm going to create a different function.

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Because the reason why I like this is able to pull a random name.

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It can be able to check them out and need to help you to understand more on this.

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So let's go ahead and create unofficial.

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And I want to also name that to be get Max.

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And now I'm going to pass in some parameters of same one.

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And uh next one is number two and number three.

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All right.

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So this is a number three.

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Now let's go ahead and just to extend like you did before.

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So you got here right inside here.

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So we're going to check is in the if statement for Volume one, number two and number three.

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And the guidance.

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See if and then.

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And see if no one.

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If no one is greater than.

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Or equal to num2.

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So if no one is greater than or equal to num2, then we're going to use the ampersand to also check

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if number one is greater than or equal to num three.

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So go ahead and say ampersand.

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Then.

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If no one is also greater than or equal to number three.

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So you can see how I'm able to do that.

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So the first time I checked, if no one is greater than or equal to num two, and also if num one is

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greater than or equal to number three.

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So in this case, if no one is greater written on words number two and number three.

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That means I'm going to return no one.

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So go ahead and return.

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No one.

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So please.

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Semicolon at the end.

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Now else if I say else if.

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So we're going to make it three conditionals right in here.

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We're going to check for a if.

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And we're going to check for number one.

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We're going to check for number two.

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And we're going to check going to check for number three.

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Now to check for number two we go ahead and say else if and number two is greater than or equal to number

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one just like we did is return on record.

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So number one then absent that means and also check for number three.

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So number two is greater than or equal Quarter number three.

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Okay.

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Now we're going to return number two because it means that number two is greater than.

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So return.

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No.

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Two press Omicron on the end.

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So else it means that num three is what?

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The greatest.

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That is what it means right in here.

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So return.

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NUM three.

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So the semicolon at the end.

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Now you have to do this very well.

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And that is very good.

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So what remains now is to go ahead and, uh, equal uh get Max.

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So get Max.

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Then we are going to go ahead and pass in the parameters you want to check.

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Maybe the first one I'm going to check for 50.

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I want to check for 87.

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I'm going to check for 54 now.

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Going to help with semicolon at the end.

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Let's save this refresh and check it out.

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So we have an error at line 12 that says uh.

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Unexpected token.

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Else if.

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So what happened?

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Right in here?

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Unexpected to call our Steve.

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So let me go ahead and check and, uh, know what actually happened here.

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So for what I just saw here, it says unexpected token.

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Else if means that, uh, for if statements, we actually deleted the curly brace here.

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Now, go ahead and close this.

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And the work was this.

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We can also see that, uh, we didn't close the function because we deleted that.

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So that is a mistake from our side.

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Go ahead and set this.

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So we've been able to close the deflation and we've been able to close the if statement.

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So go ahead and refresh this.

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Let's check it out.

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Now you can see that it's seven is the greatest.

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Now only if we make this to be 154 and no longer 54 I refresh this.

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You can see we have 154.

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So let's go ahead and make this to be 250 and save this refresh.

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We have 250 as the maximum number.

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So in that way we have been able to put in the if else statement into practice.

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And you can see that it actually worked very well, getting the maximum of three numbers and the maximum

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of two numbers respectively.

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So we're not done with that.

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Check out more on that and if you have any questions on that this video lecture, please use the question

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and answer section.

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And I'm going to get back to you as soon as possible.

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Thank you so much.

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And I'm going to see you in the next video lecture.