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up vote 0 down vote favorite

I have following print_r ($rolePermissions); array result and wondering how can i access only permIDdynamically.

 Array ( [0] => Array ( [0] => stdClass Object ( [roleID] => 1 [permID] => 1 ) [1] => stdClass Object ( [roleID] => 1 [permID] => 2 ) [2] => stdClass Object ( [roleID] => 1 [permID] => 3 ) [3] => stdClass Object ( [roleID] => 1 [permID] => 4 ) [4] => stdClass Object ( [roleID] => 1 [permID] => 5 ) [5] => stdClass Object ( [roleID] => 1 [permID] => 6 ) [6] => stdClass Object ( [roleID] => 1 [permID] => 7 ) [7] => stdClass Object ( [roleID] => 1 [permID] => 8 ) [8] => stdClass Object ( [roleID] => 1 [permID] => 9 ) [9] => stdClass Object ( [roleID] => 1 [permID] => 10 ) [10] => stdClass Object ( [roleID] => 1 [permID] => 11 ) [11] => stdClass Object ( [roleID] => 1 [permID] => 12 ) [12] => stdClass Object ( [roleID] => 1 [permID] => 13 ) [13] => stdClass Object ( [roleID] => 1 [permID] => 14 ) [14] => stdClass Object ( [roleID] => 1 [permID] => 15 ) [15] => stdClass Object ( [roleID] => 1 [permID] => 16 ) [16] => stdClass Object ( [roleID] => 1 [permID] => 17 ) [17] => stdClass Object ( [roleID] => 1 [permID] => 18 ) [18] => stdClass Object ( [roleID] => 1 [permID] => 19 ) [19] => stdClass Object ( [roleID] => 1 [permID] => 20 ) [20] => stdClass Object ( [roleID] => 1 [permID] => 21 ) [21] => stdClass Object ( [roleID] => 1 [permID] => 22 ) [22] => stdClass Object ( [roleID] => 1 [permID] => 23 ) [23] => stdClass Object ( [roleID] => 1 [permID] => 24 ) ) [1] => Array ( [0] => stdClass Object ( [roleID] => 2 [permID] => 2 ) [1] => stdClass Object ( [roleID] => 2 [permID] => 3 ) [2] => stdClass Object ( [roleID] => 2 [permID] => 4 ) ) [2] => Array ( [0] => stdClass Object ( [roleID] => 3 [permID] => 4 ) ) [3] => Array ( ) )

I am accessing with following code: 

$rolePermission[0]->permID

But i am unable to get all the records because results can be varied each time and index 0 is not feasible way to do this. It displays some records and pop up errors in others.

Error messages:
Undefined offset: 0
Message: Trying to get property of non-object

any help ?

share|improve this question
up vote 0 down vote

Either loop over the array:

$ids = array();
foreach($rolePermission as $permissionObject){
    $ids[] = $permissionObject->permID;
}

Or check that the key exists before accessing it:

if(isset($rolePermission[0])) {
    $id = $rolePermission[0]->permID;
}
share|improve this answer
    
Specifically you may want to take a look at is_a also: php.net/manual/en/function.is-a.php, you can check to see if the object is a stdClass too – DaOgre Aug 22 '14 at 1:45
1  
I would suggest an instanceof statement rather than an is_a statement. Eg: $rolePermission[0] instanceof stdClass – Scopey Aug 22 '14 at 1:46

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