php 8.2 .= not working anymore in new version

Asked Mar 31 '23 at 10:42

Active Mar 31 '23 at 10:48

Viewed 27 times

I upgraded to PhP 8.2 and now some errors show up.

I construct an select with the code below, but it only works without the .=

while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
    $select_btw .= '<option value="'.$row['ID_btw_soort_inkoop'].'">'.$row['btw_soort_inkoop_omschrijving'].'</option>';
}

Why is the .= not working anymore and what is the alternative?

Warning: Undefined variable $select_btw in D:\OneDrive\PHP_projecten\Boekhouding\inkoop_invoeren.php

edited Mar 31 '23 at 10:48

asked Mar 31 '23 at 10:42

Jilco Tigchelaar

2,065
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Please [edit] your post to include the full error you got – mousetail Mar 31 '23 at 10:47
Whre is defined $selected_btw? or do you mean $row['selected_btw']? – Telexx Mar 31 '23 at 10:51
3

Define it before you add to it: `$select_btw = '';` – brombeer Mar 31 '23 at 10:57

php 8.2 .= not working anymore in new version

0 Answers0