在元查询中搜索序列化值没有简单的方法。如果值列表不是很长,那么您可以设置多个元查询:
\'meta_query\'    => array(
    \'relation\' => \'OR\',
    array(
        \'key\'       => \'system_power_supply\',
        \'value\'     => \'single\',
        \'compare\'   => \'LIKE\',
    ),
    array(
        \'key\'       => \'system_power_supply\',
        \'value\'     => \'redundant\',
        \'compare\'   => \'LIKE\',
    )
)
 或者,如果您想获得超凡魅力,可以动态设置:
$values_to_search = array(\'single\', \'redundant\');
$meta_query = array(\'relation\' => \'OR\');
foreach ($values_to_search as $value) {
    $meta_query[] = array(
        \'key\'       => \'system_power_supply\',
        \'value\'     => $value,
        \'compare\'   => \'LIKE\',
    );
}