FAQ: Logical Operators and Compound Conditions - The && Operator

This community-built FAQ covers the “The && Operator” exercise from the lesson " Logical Operators and Compound Conditions".

Paths and Courses
This exercise can be found in the following Codecademy content:

Learn PHP

FAQs on the exercise The && Operator

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in #get-help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to #get-help and #community:tips-and-resources. If you are wanting feedback or inspiration for a project, check out #project.

Looking for motivation to keep learning? Join our wider discussions in #community

Learn more about how to use this guide.

Found a bug? Report it online, or post in #community:Codecademy-Bug-Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

I keep getting an error saying " Your function should return the string "CLAP!" if invoked with TRUE and TRUE . We tested your function with TRUE and TRUE and expected "CLAP!" but instead it returned ``.

However, when I test it, I get the correct response. Here is my function.

function clapYourHands($first, $second){

if( $first && $second ){

echo “CLAP!”;

} else{

echo “:(”;

}

}

echo clapYourHands(true,true);

Inside your function, should you echo or return those strings?

"Your function should return the string "CLAP!" if invoked with TRUE and TRUE"

1 Like

In the lesson it says:

TRUE && FALSE;   // Evaluates to: FALSE

Then goes on to say:

The && operator has a higher operator precedence than the || operator. This means that in a complex statement that includes both operators, the computer will evaluate the part of the expression with && first:

TRUE || TRUE && FALSE // Evaluates to: TRUE

How would that evaluate to TRUE if the && operand has precedence and previously it evalauted to false?

Any help appreciated :slight_smile:

Edit. Okay I think I understand this. Precedence had me confused. It’s almost easier for me to think of it as order of operations as opposed to precedence. Precedence had me thinking it was more important not what is done first.

What happens is first the && gets evaluated (giving a FALSE in the above example) then the || which would then evaluate to true because it would be evaluating TRUE || FALSE. I guess that’s why the parantheses help clarify. As it would turn into TRUE || (TRUE && FALSE ).

1 Like