why Json encode return error after new xampp installed php?

Question

I have json encode method, I use this to built an api to return json data. It's work perfectly, but after I install Xampp new version again this will display an error:

Note - This works perfectly on my previous xampp, this error came after i installed new xampp

<?php
if ($result->num_rows > 0) {

    while ($row = $result->fetch_assoc()) {

           $myObj[$a]->id   = $row["district_code"];
           $myObj[$a]->name = $row["district_name"];
           $myObj[$a]->type = 'District';

           $a++;

     }

    $myJSON = json_encode($myObj);
    echo $myJSON;
}
?>

Error:

Fatal error: Uncaught Error: Attempt to assign property "id" on null

Xampp probably upgraded your PHP version. You should probably check what you're installing instead of just randomly downloading all upgrades. — ADyson
– ADyson, Commented Aug 5, 2021 at 18:01
Does this answer your question? Reference - What does this error mean in PHP? — Nico Haase
– Nico Haase, Commented Aug 6, 2021 at 14:03

Szymon · Accepted Answer · 2021-08-05 17:51:21Z

2

You need to create $myObj first, for example with $myObj = new stdClass();, before assigning properties to it.

answered Aug 5, 2021 at 17:51

Szymon

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1 Comment

madurange Over a year ago

$myObj = new stdClass(); doesn't work with array like this $myObj[$a]->type = 'District';

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