小弟新手，请板上先进多指教
小弟的code需要检查xml里是否有某一个标签
XML范例如下
<client>
<id>1171</id>
<address>1.1.1.1</address>
<time>149318</time>
<flashver>LNX9,0,124,2</flashver>
<dropped>931</dropped>
<avsync>-210965</avsync>
<timestamp>210965</timestamp>
<active/>
</client>
<client>
<id>1164</id>
<address>1.1.1.1</address>
<time>173845</time>
<dropped>0</dropped>
<avsync>-211103</avsync>
<timestamp>211103</timestamp>
<publishing/> <