php associative array of objects

Question

I'm trying to create associative array of objects from row result set with member id as the key, but getting some error.

addATravelog() is just a function of the class UserLogsAndSOS(), whose objects i want in array.

Here is what I tried:

class UserArraySet {

private $arrayOfUsers = array();    

function createArrayForTravelogs($result) {
    While($row = $result->next()) {
        if(array_key_exists($row['id'], $this->arrayOfUsers)) {
            $this->arrayOfUsers[$row['id']] = new UserLogsAndSOS();
        }
    $this->arrayOfUsers[$row['id']]->addATravelog($row['title'], $row['blog']); //line     72                                           
    }
}
}

On calling createArrayForTravelogs() from the object I got the following error Here is the error I got:

Notice: Undefined index: 1 in C:\xampp\htdocs\site\classes\userprofile.php on line 72

Fatal error: Call to a member function addATravelog() on a non-object in C:\xampp\htdocs\site\classes\userprofile.php on line 72

Can someone please let me know how to achieve this, I want something like this:

Array (

 [1] => objectUserLogsAndSOS1

 [5] => objectUserLogsAndSOS2
 ....
)

where key is the member id from $row. I also need to check if the key exists, then call a function of that particular object to add data to its member, if not then create an object and then call a function of that particular object to add data to its member.

Thanks

Del Pedro · Accepted Answer · 2012-09-05 13:28:59Z

2

just read the error message: you only create UserLogsAndSOS if there is already an entry - otherwise you call addATravelog on null. maybe you forgot the "!" in your if clause?

answered Sep 5, 2012 at 13:28

Del Pedro

1,21212 silver badges32 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

vicked Over a year ago

Oops! wasted whole day and googled it all day long.. Thanx Del

Del Pedro Over a year ago

your welcome, please mark the question as resolved and have a nice day

Littm · Accepted Answer · 2012-09-30 08:02:52Z

1

Because the array stays empty.

You only create a new UserLogsAndSOS when there already is an element with the provided ID in the arrayOfUsers. The exact opposite of what you probably wanted.

You're probably missing a ! to reverse the array_key_exist result.

edited Sep 30, 2012 at 8:02

Littm

4,9454 gold badges33 silver badges40 bronze badges

answered Sep 5, 2012 at 13:31

Louis Huppenbauer

3,7141 gold badge20 silver badges24 bronze badges

Comments

ro ko · Accepted Answer · 2012-09-05 13:30:53Z

0

if(!array_key_exists($row['id'], $this->arrayOfUsers)) {
   $this->arrayOfUsers[$row['id']] = new UserLogsAndSOS();
}

You missed and '!' I think this is causing the error

answered Sep 5, 2012 at 13:30

ro ko

2,9963 gold badges40 silver badges58 bronze badges

Collectives™ on Stack Overflow

php associative array of objects

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related