PHP的栏目导航程序

<?php$d_label=array("service"=>"有偿服务","teach"=>"家教中心","union"=>"校园服务联盟","job"=>"学生兼职","free"=>"信息库");$directory=$REQUEST_URI;while($directory!="/"){;;$d_text=basename($directory);;;if(isset($d_label[$d_text])){$d_text=$d_label[$d_text];};;$d_link=$directory;;;$d_curx="-&gt;<a href="$d_link">$d_text</a>";;;$d_komplettx=$d_curx.$d_komplettx;;;$directory=dirname($directory);};;echo "栏目导航:".$d_komplettx;?>