php - Warning: in_array() expects parameter 2 to be array

Question

求助：
报错：Warning: in_array() expects parameter 2 to be array, string given in D:phpStudyWWWzhutiwp-contentthemesthemeprofunctions.php on line 98

出错位置：

if ( $depth == 0 && ($args->depth)>=0 && in_array( 'menu-item-has-children', $item->classes )){
        $class_names[] = 'menu-item-has-children';
        $atts_class[] = 'dropdown-toggle';
        $atts['data-toggle'] = 'dropdown';
        $caret = ' <span class="caret"></span></a>';
    }

请问怎么修改啊

Answer 1

You can change the second parameter of in_array to (array)$item->classes to force the type to be converted to an array

Answer 2

It’s your item->classes不是数组，是个字符串，需要将item->classes converted into an array before use