mongodb - 在 MongoDB 中将 UTF-8 字符（土耳其语）与 PHP 匹配

Question

我正在使用带有 PHP 驱动程序的 MongoDB，并且正在使用土耳其语字符集。但是当我尝试匹配土耳其字符时，出现了问题。

例如，我的数据库包含以下值：

• 英语
• 意大利
• 桑皮约纳

当我在数据库中搜索它们时，没有结果。

$database->find(array('value'=>'İngiltere'));

给我空的结果，因为它不匹配土耳其字符，它不自动匹配。

可以做些什么来解决这个问题？

Answer 1

$database->find(array('value'=>'İngiltere'));

There is no find() method on the MongoDB class. Is $database a MongoCollection instance?

You may be running into trouble with UTF-8 encoding (see: this answer for related discussion), but all three of the strings you shared appear to be properly encoded. Using UTF-8 strings, there should be no issue inserting and querying with said values. Consider the following code example:

$values = ['İngiltere', 'İtalya', 'Şampiyona'];

$m = new MongoClient();
$c = $m->test->foo;
$c->drop();

foreach ($values as $value) {
    printf("Testing value: %s\n", $value);
    printf("Detected encoding: %s\n", mb_detect_encoding($value));

    $c->insert(['x' => $value]);
    var_dump($c->findOne(['x' => $value]));
    echo "\n";
}

This generates the following output on my system:

Testing value: İngiltere
Detected encoding: UTF-8
array(2) {
  '_id' =>
  class MongoId#6 (1) {
    public $$id =>
    string(24) "5213d027e84df17727ca7985"
  }
  'x' =>
  string(10) "İngiltere"
}

Testing value: İtalya
Detected encoding: UTF-8
array(2) {
  '_id' =>
  class MongoId#5 (1) {
    public $$id =>
    string(24) "5213d027e84df17727ca7986"
  }
  'x' =>
  string(7) "İtalya"
}

Testing value: Şampiyona
Detected encoding: UTF-8
array(2) {
  '_id' =>
  class MongoId#4 (1) {
    public $$id =>
    string(24) "5213d027e84df17727ca7987"
  }
  'x' =>
  string(10) "Şampiyona"
}