$arrq = array();
$arrq['tuc'] = array('sss'=>'ewq','shu'=>'sjkah','saa'=>'dwjhaz');
$arrq['tucs'] = array('ssss'=>'ewsq','sQhu'=>dwjhaz','sa12a'=>'dwjQhaz');
$arrq['tuca'] = array('sssd'=>'ewqq','shu2'=>'sjkah','saSa'=>'dwjhhaz');

<?php
$arrq = array();
$arrq['tuc'] = array('sss'=>'ewq','shu'=>'sjkah','saa'=>'dwjhaz');
$arrq['tucs'] = array('ssss'=>'ewsq','sQhu'=>'dwjhaz','sa12a'=>'dwjQhaz');
$arrq['tuca'] = array('sssd'=>'ewqq','shu2'=>'sjkah','saSa'=>'dwjhhaz');
$last=array(); //設置一個空的用來比較的數組
while($arr=current($arrq)) {
  //echo key($arrq);
  $tmp=array_unique($arr); //先清除每個一維數組自身相同的值
  if(count($last)==0) {
    $last=array_merge($last,$arr); //將已經去重的前面的數組合并
  }
  else { // 對其余一維數組進行輸出
    //echo key($arrq);
    foreach($arr as $ke=>$va) {
      if(in_array($arr[$ke], $last)) //如果已經存在的元素
      unset($arrq[key($arrq)][$ke]); //刪除,此處取得數組元素的KEY值是關鍵
    }
    $last=array_merge($last,$arr); //將$last變為前面數組的合集,用來進行下次比較
  }
  next($arrq); //指針向后移,這樣才能用key函數取得不同的$arrq的下標
}
//以下輸出處理后的數組
foreach($arrq as $arr) {
  foreach($arr as $val) {
    echo $val." ";
  }
  echo "<br>";
}
?>