PHP: Testing whether three variables are equal

Question

I\'ve never come across this before, but how would you test whether three variables are the same? The following, obviously doesn\'t work but I can\'t think of an elegant (and co

Answer 1

you already have your answer by Adam but a good way to remember how to do this correctly is to remember for a single validation you should be wrapping in () braces, if your only doing one single check then you already have the braces provided by the if ( ) statement.

Example:

if ( a === b )

and if your doing multiple then

if( ( a === b ) && ( c === d ) )

Sop if you remember that every set of braces is a validation check, you can have login like this:

if( (( a === b ) || ( c === d )) && ( e === f ) )

if statements and many other logical operations work on hierarchy so that the amount of individual checks within a check has an effect on he parent check.

taking the third example above if a === b or c === d fails then e === f will never be checked as the ab,cd is wrapped in braces so that is returned and checked.

Hope this helps you a little more.