How to make search case-INsensitive

Hello,

i have following search code

if ( $location  ){
    $name_value_pairs['location'] = array(
            'name'  => 'location',
            'value' => '%'.$location.'%',
            'operand' => 'LIKE'
    );
}

$options['metadata_name_value_pairs'] = $name_value_pairs;

$content = elgg_list_entities_from_metadata($options);

 

It only works case-sensitive. I would like to make it case-insensitive like the standard search function. How can i do it?

Thx for help!