php中的数组交集

我有一段话：

$tableau = array_intersect(GetSearchByRegion($_SESSION['region']),
                       GetSearchByCity($_SESSION['city']),
                       GetSearchByState($_SESSION['state']),
                       GetSearchByCountry($_SESSION['country']),
                       GetSearchByKeywords($_SESSION['keywords']),
                       GetSearchByDate($_SESSION['date']),
                       GetSearchByCompany($_SESSION['company']),
                       GetSearchByCategory($_SESSION['category']));

if(sizeof($tableau) == 0)
{
    header('Location: fail.html');
}
else
{    
    $tableau1 = array_intersect(GetSearchByRegion($_SESSION['region']),
                            GetSearchByState($_SESSION['state']));

    echo "size of state =".sizeof(GetSearchByState($_SESSION['state']))."</br>";
    echo "size total".sizeof($tableau)."</br>";
    echo sizeof($tableau1)."</br>";

    // $_SESSION['liste'] =GetInformationsFromId($tableau);
    // header('Location: list.php');
}

$tableau=array\u intersect（GetSearchByRegion（$\u SESSION['region']），
GetSearchByCity（$\u会话['city']），用于，
GetSearchByState（$\u会话['state']），
GetSearchByCountry（$\u会话['country'），
GetSearchByKeywords（$\u会话['keywords']），
GetSearchByDate（$\u会话['date']），
GetSearchByCompany（$\u会话['company']），
GetSearchByCategory（$_会话['category']）；
if（sizeof（$tableau）==0）
{
标题（'Location:fail.html'）；
}
其他的
{    
$tableau1=array\u intersect（GetSearchByRegion（$\u SESSION['region']），
GetSearchByState（$_会话['state']）；
echo“size of state=“.sizeof（GetSearchByState（$_SESSION['state'）））。”
；
回显“总尺寸”。尺寸（$tableau）。“
”；
回声大小（$tableau1）。“
”；
//$\u SESSION['liste']=GetInformationsFromId（$tableau）；
//标题（'Location:list.php'）；
}

问题是结果是状态的大小=1 总尺寸3 3 我不知道为什么交集不起作用：一个表的大小=1，另一个表的大小通常是一个表的大小等于1。所以：

• 我需要知道是什么错误
• 我怎样才能修好它

数组_intersect（）不能消除重复项：

php > $x = array('a', 'a', 'b', 'c');
php > $y = array('a', 'b');
php > var_dump(array_intersect($x, $y));
array(3) {
  [0]=>
  string(1) "a"
  [1]=>
  string(1) "a"
  [2]=>
  string(1) "b"
}
php >

注意

$x

数组中重复的

a

值。这两个值之间只有两个相同的不同值，在

$y

中只有两个值，但交点仍然是3个值。

这是结果： `

---

`

但是我的一个表包含一行，而另一个表没有重复的行（从带有主键的DB中），因此重复问题不是原因。请转储$tableau和$tableau1以查看正在使用的内容。只处理计数有点毫无意义。

array\u unique（array\u intersect（$x，$y））

总是将

echo var\u dump（tableau）的结果作为一行提供给我。“
”；echo变量转储（表1）。“
”是
string'tableau'（长度=7）string'tableau1'（长度=8）
让我无法理解为什么会得到大小=3，因为每个元素中只有一个元素。为什么结果是假的？
table state =
array
  0 => 
    array
      0 => string '1' (length=1)
      'id' => string '1' (length=1)
      1 => string '2013-01-01' (length=10)
      'date' => string '2013-01-01' (length=10)
      2 => string 'software engineer' (length=17)
      'title' => string 'software engineer' (length=17)
      3 => string 'wall street' (length=11)
      'state' => string 'wall street' (length=11)
      4 => string 'Newyork' (length=7)
      'city' => string 'Newyork' (length=7)
      5 => string 'alaska' (length=6)
      'region' => string 'alaska' (length=6)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)
table total=
array
  0 => 
    array
      0 => string '1' (length=1)
      'id' => string '1' (length=1)
      1 => string '2013-01-01' (length=10)
      'date' => string '2013-01-01' (length=10)
      2 => string 'software engineer' (length=17)
      'title' => string 'software engineer' (length=17)
      3 => string 'wall street' (length=11)
      'state' => string 'wall street' (length=11)
      4 => string 'Newyork' (length=7)
      'city' => string 'Newyork' (length=7)
      5 => string 'alaska' (length=6)
      'region' => string 'alaska' (length=6)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)
  1 => 
    array
      0 => string '2' (length=1)
      'id' => string '2' (length=1)
      1 => string '2013-01-08' (length=10)
      'date' => string '2013-01-08' (length=10)
      2 => string 'formater' (length=8)
      'title' => string 'formater' (length=8)
      3 => string 'erer' (length=4)
      'state' => string 'erer' (length=4)
      4 => string 'vvv' (length=3)
      'city' => string 'vvv' (length=3)
      5 => string 'colorado' (length=8)
      'region' => string 'colorado' (length=8)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)
  2 => 
    array
      0 => string '3' (length=1)
      'id' => string '3' (length=1)
      1 => string '2013-01-08' (length=10)
      'date' => string '2013-01-08' (length=10)
      2 => string 'hardware engineer' (length=17)
      'title' => string 'hardware engineer' (length=17)
      3 => string 'rgjjer' (length=6)
      'state' => string 'rgjjer' (length=6)
      4 => string 'kjrg' (length=4)
      'city' => string 'kjrg' (length=4)
      5 => string 'oklahoma' (length=8)
      'region' => string 'oklahoma' (length=8)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)

table small=
array
  0 => 
    array
      0 => string '1' (length=1)
      'id' => string '1' (length=1)
      1 => string '2013-01-01' (length=10)
      'date' => string '2013-01-01' (length=10)
      2 => string 'software engineer' (length=17)
      'title' => string 'software engineer' (length=17)
      3 => string 'wall street' (length=11)
      'state' => string 'wall street' (length=11)
      4 => string 'Newyork' (length=7)
      'city' => string 'Newyork' (length=7)
      5 => string 'alaska' (length=6)
      'region' => string 'alaska' (length=6)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)
  1 => 
    array
      0 => string '2' (length=1)
      'id' => string '2' (length=1)
      1 => string '2013-01-08' (length=10)
      'date' => string '2013-01-08' (length=10)
      2 => string 'formater' (length=8)
      'title' => string 'formater' (length=8)
      3 => string 'erer' (length=4)
      'state' => string 'erer' (length=4)
      4 => string 'vvv' (length=3)
      'city' => string 'vvv' (length=3)
      5 => string 'colorado' (length=8)
      'region' => string 'colorado' (length=8)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)
  2 => 
    array
      0 => string '3' (length=1)
      'id' => string '3' (length=1)
      1 => string '2013-01-08' (length=10)
      'date' => string '2013-01-08' (length=10)
      2 => string 'hardware engineer' (length=17)
      'title' => string 'hardware engineer' (length=17)
      3 => string 'rgjjer' (length=6)
      'state' => string 'rgjjer' (length=6)
      4 => string 'kjrg' (length=4)
      'city' => string 'kjrg' (length=4)
      5 => string 'oklahoma' (length=8)
      'region' => string 'oklahoma' (length=8)
      6 => string 'quality' (length=7)
      'company_name' => string 'quality' (length=7)