php writing isset check in if statement

Question

Very stupid question how to check 2 things in 1 if. , I'm getting errors typing code in a wrong way.

I need to check if expression A isset, OR expression B isset in 1 IF statement

My code is if (isset(expression1) OR isset(expression2)) {}

this is an yii framework this is fullcode

if (isset(Yii::app()->user->viewUsersPage) OR isset(Yii::app()->user->checkAccess('guest')))

something is wrong there...

Actually your script is correct, though use || instead of OR — nanobash
– nanobash, Commented Mar 19, 2014 at 15:35
actuaaly it's not an expression but a call to some variable. sorry — David
– David, Commented Mar 19, 2014 at 15:35

AbraCadaver · Accepted Answer · 2014-03-19 15:57:02Z

2

What's this? Checking isset on a function return?

isset(Yii::app()->user->checkAccess('guest'))

Maybe you want to check for true:

if (isset(Yii::app()->user->viewUsersPage) || Yii::app()->user->checkAccess('guest'))

Or:

if (isset(Yii::app()->user->viewUsersPage) || (Yii::app()->user->checkAccess('guest') == true))

I don't know the code, but maybe you should be checking for true on viewUsersPage as well?

Maybe also try this instead of isset(Yii::app()->user->viewUsersPage:

if (property_exists(Yii::app()->user, 'viewUsersPage') || Yii::app()->user->checkAccess('guest'))

Though isset should work fine.

edited Mar 19, 2014 at 15:57

answered Mar 19, 2014 at 15:41

AbraCadaver

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5 Comments

David Over a year ago

this code works, but the problem is that now I'm getting messages that WebUser.viewUsersPage is not defined. And I understand why it is. And that's why I was trying to bypass it with isset. I mean the WebUser.viewUsersPage maybe present and just check it, and may not present.

David Over a year ago

AbraCadaver second part of IF is OK. Problem is with first part, which sometimes exist in my application and sometimes no. And because of that I'm checking it here in the way to bypass it without errors if it is not present. That's why I write isset, but I still getting errors :(

AbraCadaver Over a year ago

Edited, try property_exists()

David Over a year ago

HEY sorry , was my fault! This code works just fine!

David Over a year ago

property_exists not needed. isset works fine, had some other errors, in line after this. Thanks for the help!

GSinghLDN · Accepted Answer · 2014-03-19 15:40:02Z

-1

We use the || operator. See here.

if (isset(Yii::app()->user->viewUsersPage) || isset(Yii::app()->user->checkAccess('guest'))) {

   // do something
}

answered Mar 19, 2014 at 15:40

GSinghLDN

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2 Comments

Styphon Over a year ago

Wow... the page you even link uses OR as well as || in the first example.

GSinghLDN Over a year ago

|| has a greater precedence than OR

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