PHP Array Warning: Creating default object from empty value

Question

I have taken values from a MySQL query into an array so that I can sort them. It all works well except I am getting lots of errors

 Warning: Creating default object from empty value

This is so that I can sort the array based on post_id and quality

$count = 0;
$searcharticles = new stdClass();
$postid = 0;
while ($row = mysqli_fetch_object($result1) ) {

    $postid     = $row->ID;
    $title      = $row->post_title;
    $titlescore = $row->titlescore;
    $quality    = $row->quality;

    $searcharticles->$postid->post_id =$postid;
    $searcharticles->$postid->title =$title;
    $searcharticles->$postid->titlescore = $titlescore;
    $searcharticles->$postid->quality =$quality;

$count ++;
}

Some posts on Stackexchange indicated that I should add in $searcharticles = new stdClass();

But this has not solved the problem

I am looking to remove the errors and not just suppress the warnings.

Any ideas?

Possible duplicate of Creating default object from empty value in PHP? — summea
– summea, Commented Jan 8, 2016 at 17:44
No I tried that first. That is whi I tried adding the $searcharticles = new stdClass(); and $postid = new stdClass(); lines to the code. — Jonty5817
– Jonty5817, Commented Jan 8, 2016 at 17:47
Yes $postid is an integer.I have changed the code to $postid=0; but the error is the same — Jonty5817
– Jonty5817, Commented Jan 8, 2016 at 17:54
What type of structure are you trying to create? Creating object properties named by the integer $postid is confusing. If $searcharticles is to be a collection, it should be an array of objects, such that you are creating $searcharticles[$postid]->title = $title for example. — Michael Berkowski
– Michael Berkowski, Commented Jan 8, 2016 at 17:56
... Which then requires that you initialize each array item to a new stdClass first: $searcharticles[$postid] = new stdClass(); and instead of creating $searcharticles as a stdClass, create it as an array(). — Michael Berkowski
– Michael Berkowski, Commented Jan 8, 2016 at 17:57

Gordon · Accepted Answer · 2016-01-08 18:19:02Z

10

You get the warning

Warning: Creating default object from empty value

because you do

$searcharticles->$postid->post_id = $postid;

Your $searcharticles is a StdClass. You assign the property $postId and then immediately chain off another property post_id, which forces PHP to create a new default object.

To avoid it, put this before the chained method calls:

$searcharticles->$postid = new StdClass;
$searcharticles->$postid->post_id =$postid;
$searcharticles->$postid->title =$title;
$searcharticles->$postid->titlescore = $titlescore;
$searcharticles->$postid->quality =$quality;

answered Jan 8, 2016 at 18:19

Gordon

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Comments

Kike Gamboa · Accepted Answer · 2020-05-05 23:42:10Z

0

Maybe your problem is not $searcharticles, could be $row.

Try

$searcharticles = new stdClass; AND $row = new stdClass;

Good luck!

answered May 5, 2020 at 23:42

Kike Gamboa

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