Question

Why is this warning occuring when I am using IE?

Warning: Invalid argument supplied for foreach() 

It works in all other browsers..

The function for the loop:

function wdsearch(PDO $dbh){
    if(!isset($_POST['wdsubmit'])) {
    } else {
        $term = $_POST['wdsearchvalue'];
        $stmt = $dbh->prepare("
            SELECT      *
            FROM        posts
            WHERE       category = :designer
            AND         (full_text LIKE CONCAT('%', :term, '%')
            OR          heading LIKE CONCAT('%', :term, '%'))
            ORDER BY    post_date DESC
        ");
        $designer = 'Designer';
        $stmt->bindParam(":designer", $designer);
        $stmt->bindParam(":term", $term);
        $stmt->execute();
        return $stmt->fetchAll();
    }
}
wdsearch($dbh);
$wdsearch = wdsearch($dbh);

And the loop goes here..

<?php foreach($wdsearch as $wds) : ?>
<!-- HTML here -->
<?php endforeach; ?>

Any possible IE related warnings? Like I said all other browsers can handle it..

Answer 1

The specified error is occurring in your PHP code, not in any specific browser.

The issue is, the datatype of $wdsearch, does not implement an iterator. This could be caused by $wdsearch being null, a string/number/etc. – or simply an unsupporting object.

Try verifying if the data is an array before going into the foreach loop with is_array($wdsearch), or verify the variable is not null with isset($wdsearch). If you believe there is valid data there, check to see if the object in $wdsearch actually supports iterators and, if not, update it to implement!

Example:

<?php
if (isset($wdsearch)):
    foreach($wdsearch as $wds) :
        ?>
        <!-- HTML here -->
        <?php
    endforeach;
endif;
?>