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PHP PHP Basics Daily Exercise Program Review Basics

Darya Zata
Darya Zata
2,562 Points
Posted by Darya Zata
Darya Zata
2,562 Points

which of statements will throw false (php)

hello all,

i dont get this :

which of following statements will be tested as false when tested as boolean

$time=0; $num=-2; $boolean=true; $name='Treehouse';

thanku!

3 Answers

Juthawong Naisanguansee
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.a{fill-rule:evenodd;}techdegree seal-36
Juthawong Naisanguansee
Full Stack JavaScript Techdegree Graduate 80,724 Points
Juthawong Naisanguansee
.a{fill-rule:evenodd;}techdegree seal-36
Juthawong Naisanguansee
Full Stack JavaScript Techdegree Graduate 80,724 Points

Hello Darya ,

The 0 in PHP is tested as False.

Cheers! , Juthawong Naisanguansee

$time=0;

Robert Bennett
Robert Bennett
11,927 Points
Robert Bennett
Robert Bennett
11,927 Points

In Boolean values the logic is 0 is false and 1 is true or (false and true values). All Boolean values are on or off statements like a light switch. So, 0 is equal to false and 1 is equal to true. ex. $num 0 = 0; If(num === 0) {do this code.} The code will run because this is a true statement because 0 or false Boolean is equal to 0 the false Boolean value. I hope this helped.

Darya Zata
Darya Zata
2,562 Points
Darya Zata
Darya Zata
2,562 Points

thanku for the answer, so to understand it right f(num === 0) {do this code.} The code will run because this is a true statement the statement itselt is true , but the value of the variable num is false (=0), correct?

Robert Bennett
Robert Bennett
11,927 Points
Robert Bennett
Robert Bennett
11,927 Points

Yes, You got it... In The if("This has to be true to run") the $num 0 = 0; If($num 0 === 0 ) that is a true statement using a false Boolean... Two false Boolean that are equality to each other is a true statement...