这应该是相当简单的使用Meta_Query 的参数WP_Query 对象

您可以设置关系并设置任意数量的字段：

$args = array(
\'meta_query\' => array(
        \'relation\' => \'OR\', //realation 
        array(
            \'key\' => \'color\', //first custom field
            \'value\' => \'blue\',
            \'compare\' => \'NOT LIKE\'
        ),
        array(
            \'key\' => \'price\', //second custom field
            \'value\' => array( 20, 100 ),
            \'type\' => \'numeric\',
            \'compare\' => \'BETWEEN\'
        )
    )
);

$query = new WP_Query( $args );