檢查 Deborah 是否有主人,其文字值是否為空

XML

<Deborah>
    <address>Dark world</address>
    <master>Babadi</master>
    <ID>#0</ID>
    <colour>red</colour>
    <side>evil</side>
</Deborah>

XPATH

boolean(/Deborah/master/text())

要麼

string(/Deborah/master) != ''

OUTPUT

true