将相同数据合并显示的有关问题

$a=array(
   array('领导','张三'),
   array('领导','李四'), 
   array('领导','王五')
);
foreach($a as $k=>$b){
       if(!$tem[$b[0]])
             $tem[$b[0]]=$b; 
       else
           $a[$k][0]='';   
}
echo "";
foreach($a as $v){
     echo "";
     echo "";
     echo "";
     echo "";
}
echo "
".$v[0]."
|".$v[1]."
";

------解决方案--------------------

PHP code

header("content-type:text/html;charset=utf-8");
$a=array(
   array('领导','张三'),
   array('领导','李四'), 
   array('领导','王五')
);

echo "";
foreach($a as $k => $v){
    echo "";
    if($k === 0)
    {
         echo "";
         echo "";
    }
    else
    {
        echo "";
    }
     echo "";
}
echo "
".$v[0]."
|".$v[1]."
|".$v[1]."
";