Exception is thrown on line query.php on line 1758 Warning: strpos() expects parameter 1 to be string

[syntaxart]

This exception is thrown when submitting a url such as http://testing.dev/vacancy/?country[]=australia&country[]=new-zealand

What is trying to be acheived?

I am trying to submit multiple terms per taxonomy using a checkbox list of values with the name set to name="country[]". The tax_query successfully works but an exception is printed to the window.

I have created a fix on my local machine which is to wrap the nested statement with

if (!is_array($term)) {
                    if (strpos($term, '+') !== false) {
                        $terms = preg_split('/[+]+/', $term);
                        foreach ($terms as $term) {
                            $tax_query[] = array_merge($tax_query_defaults, array(
                                'terms' => array($term)
                            ));
                        }
                    } else {
                        $tax_query[] = array_merge($tax_query_defaults, array(
                            'terms' => preg_split('/[,]+/', $term)
                        ));
                    }
                }

I also used the plugin Taxonomy Picker to test multiple selected terms, and the same exception is thrown.

Thank you very much for looking into this bug.

Regards

Ryan

[SergeyBiryukov]

Duplicate of and #26308 and #17737.