In PHP I'm returning the sum of two columns and getting back an object of:
stdClass Object ( [sum(`total`)] => 54.00 [sum(`word_count`)] => 90 )
I'm trying to loop through this with a foreach
foreach($Classified as $classified) {
echo $classified->total;
echo $classified->sum;
}
returns the error: Notice: Trying to get property of non-object. I suspect the sum is somehow throwing it off?
Related
I am having a problem trying to pass a variable from the controller to the view. I think I am doing a mistake somewhere, I can't find it since I am new to it.
My controller Method is :
public function paymentdetail($order_code)
{
$this->load->model('Payment_Model');
$paymentDetail = $this->Payment_Model->getpaymentdetail($order_code);
$orderDetail = $this->Payment_Model->getOrderDetail($order_code);
// echo print_r($paymentDetail);
$datas['content'] = $this->load->view('payment/paymentDetail',
array('paymentDetail' => $paymentDetail,
'orderDetail' => $orderDetail), true);
$this->load->view('layouts/main_template', $datas);
}
The following model function getpaymentdetail() returns an array (result_array()) and this is the one I am concerned about. If I can work this one out then I can also work with other model methods.
$this->Payment_Model->getpaymentdetail($order_code);
When I type <?php echo $paymentDetail['column_name']; ?> in view file(PaymentDetail.php) I get an error
Undefined index: column_name
Why do I get this error?
model function getpaymentdetail() returns an array (result_array())
those arrays are normally structured like this:
Array
(
[0] => Array
(
[ID] => 3120
[column_name] => col1
)
)
hence you cannot access column_name via <?php echo $paymentDetail['column_name']; ?> as this index doesn't exist in your array structure.
if you move one index deeper, then it will work: <?php echo $paymentDetail[0]['column_name']; ?>
Attention, if you expect more than 1 row to be returned, above will only access the first result (indexed 0) row! You'd need a foreach loop to get all results, see Generating Query Results - result arrays
I am trying to print a number from an array. But when i do this:
echo $results[0][0];
i get error.I tried to print the whole array using print_r() function
echo print_r($results);
Then i get this result:
Array ( [0] => stdClass Object ( [lastOrderProcessedNumber] => 109089875875875 ) ) 1
I just need to print "109089875875875" this number
How can i do that?
Thank you in advance
print_r() is a great way to inspect the contents of a variable. What it is showing you is that your variable holds an array whose first element (at index 0) is an object with an lastOrderProcessedNumber attribute. In PHP, you use -> to access object properties, so you should be able to retrieve the 109089875875875 value like this:
$results[0]->lastOrderProcessedNumber
As you can see from the print_r result, the indexed result is an object:
// $results is an 'Array' (access with square brackets)
Array
(
// Index 0 is an Object (access with arrow operator)
[0] => stdClass Object
(
[lastOrderProcessedNumber] => 109089875875875
)
)
This means you have to access the property through the arrow operator, like so:
$results[0]->lastOrderProcessedNumber
If you're expecting to only have one result, or to grab the first result from $results, you can make use of reset:
reset($results)->lastOrderProcessedNumber
If you see $results is an array of objects, that means that $results[0] is an object, not an array, so you can't access its attributes as an array but instead as an object. Like this:
$results[0]->lastOrderProcessedNumber;
The if condition is throwing the following notice, how to fix this?
Notice: Trying to get property of non-object in /view_rep.php on line 17
Here is my php code
if ($check->check_area->id != #$_GET['check_area']) {
unset($check[$k]);
}
I tried the following but still, I can see multiple notices
error_reporting(0);
ini_set('display_errors',0);
Print_r($check), print thefollowing
[check_area] => stdClass Object
(
[id] => 5429140
[url] => /api/v2/checke_areas/5429140
[name] => Other
)
It seems $check is an array of object(s). If that's the case then change your if condition
if ($check->check_area->id ...
to
if ($check['check_area']->id ...
In order for $check->check_area->id to work:
$check must be an object with a property of check_area.
$check->check_area must be an object with a property of id.
One or both of these has not been met if you are getting a property of a non-object error.
Try checking whether they are objects before trying to access the property:
if ($check instanceof stdClass) {
}
I currently have an Object which holds a series of Arrays, when I do print_r it does show the arrays however, when I want to get these values out I seem to be getting an error.
print_r($Obj->Example);
Returns:
Object => Example ( 'Username' => 'Example' )
My code to query through the Object is:
foreach($Obj as $single):
echo $Example['Username'];
endif;
Is it possible to query through like this because it isn't working and I get an error saying that:
$Obj is not defined as an Array
So how can I access the Example array and echo all the Usernames ?
As Example is an array that belongs to an object, the code would be like this
foreach($Obj->Example as $single):
echo $single['Username'];
endif;
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 $row.
I also need to check if the key exists, then call a function of that particular object to add data to its member, if not then create an object and then call a function of that particular object to add data to its member.
Thanks
just read the error message: you only create UserLogsAndSOS if there is already an entry - otherwise you call addATravelog on null.
maybe you forgot the "!" in your if clause?
Because the array stays empty.
You only create a new UserLogsAndSOS when there already is an element with the provided ID in the arrayOfUsers. The exact opposite of what you probably wanted.
You're probably missing a ! to reverse the array_key_exist result.
if(!array_key_exists($row['id'], $this->arrayOfUsers)) {
$this->arrayOfUsers[$row['id']] = new UserLogsAndSOS();
}
You missed and '!' I think this is causing the error