PHP: if ($day == 'Monday') or if ('Monday' == $day) Variable first or ?

deadserious · Dec 29, 2003

I've asked this before, but would like to see what everyone thinks about it now.

Is it better to place the variable first or last? Which do you prefer?

placing it first:
if ($day == 'Monday')

placing it last:
if ('Monday' == $day)

DuffMan · Dec 29, 2003

I normally use if ($day == 'Monday'). The other way around just doesn't seem right to me.

Jeanco · Dec 29, 2003

always variable first in comparison operations.

Kodeking · Dec 29, 2003

Originally posted by Jeanco
always variable first in comparison operations.

Yeah, you want to know if it is an instance of something.

zoya19 · Dec 30, 2003

We have always used: ($day == 'Monday'), as well.

CreativeLogic · Dec 30, 2003

Honestly it doesnt matter. Either way you are going to get the true or false result. So it doesn't matter which but it has become a standard in almost all languages to do variable then comparison then what you are comparing.

RJ · Dec 30, 2003

It's interesting. I've been around awhile and never seen a programmer put the variable second in comparisons. It would work either way, I'm just wonding where you picked up that style of coding and what the logic behind it was?

if ('Monday' == $day)

deadserious · Dec 30, 2003

Someone suggested that it was a better way to do it to for error checking reasons is where I picked it up.

So if you accidentaly make the mistake of using one = sign where you should be using two in a comparison it will give you an error and point you right to the line of code with the problem rather than replacing the value of the variable. But I still use variable first because it's just natural to me.

Alpha · Dec 30, 2003

Well the way I learned was placing variables first. It also makes it MUCH easier to an editor to read your code that way.

BTW: Deadserious please clear your PM inbox. I have been trying to PM you but it won't let me.

Japsta · Jan 11, 2004

yea fully

linuxfan · Jan 14, 2004

yes. all php code i have done is variable first.. putting it opposite makes my life pretty hard. very difficult to read... bleh.

PHP: if ($day == 'Monday') or if ('Monday' == $day) Variable first or ?

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