無法獲得UTF-8特殊字符正確寫入MySQL（PHP）

Question

我正在創建一個PHP腳本在命令行上運行在一個典型的LAMP棧（L = OS X）上，並且遇到了很多麻煩特殊字符在數據庫中正確記錄。

此腳本以遞歸方式掃描目錄並將完整路徑插入到MySQL數據庫表中。我已經做了大量的研究，如何讓特殊的字符寫入MySQL，但他們顯示爲?字符。

下面是代碼：

<?PHP 
ini_set('default_charset', 'UTF-8'); 


$link = mysql_connect('localhost', '--USER--', '--PASSWORD--'); 
mysql_set_charset('utf8',$link); 

if (!$link) { 
    die('Could not connect: ' . mysql_error()); 
} 

if(!mysql_select_db("files")) { 
    die('Could not connect: ' . mysql_error()); 
} 

mysql_query("SET NAMES utf8"); 
mysql_query("SET CHARACTER SET utf8"); 

function startsWith($haystack, $needle) { 
    return $needle === "" || strrpos($haystack, $needle, -strlen($haystack)) !== FALSE; 
} 

function getDirContents($dir, &$results = array()) { 
    $files = scandir($dir); 
    foreach($files as $key => $value) { 
      $path = realpath($dir.DIRECTORY_SEPARATOR.$value); 
      if(startsWith($path,'/Volumes/Macintosh HD/')) { 
        unset($files[$key]); 
      } else if(!is_dir($path) && !startsWith($value,'.') && startsWith($path,'/Volumes/')) { 
        $results[] = $path; 
        $query="INSERT IGNORE INTO files (path,dir) VALUES ('$path','0')"; 
        mysql_query($query); 
      } else if(is_dir($path) && !startsWith($value,'.') && startsWith($path,'/Volumes/')) { 
        getDirContents($path, $results); 
        $results[] = $path; 
        $query="INSERT IGNORE INTO files (path,dir) VALUES ('$path','1')"; 
        mysql_query($query); 
      } 
    } 
    return $results; 
} 


$directory='/Volumes'; 
$files=getDirContents($directory); 
sort($files); 
print_r($files); 

?> 

有問題的路徑是：

/Volumes/Mac Stadium Shuttle 1/DIG2008060702/files/Susan-Jürgen.dvdproj/Contents/PkgInfo 

通知在Jürgen變音符號炭。當腳本打印陣列中的所有文件時，ü正確顯示。

如果我添加一行到PHP腳本打印mysql_query()，返回以下：

INSERT IGNORE INTO files (path,dir) VALUES ('/Volumes/Mac Stadium Shuttle 1/DIG2008060702/files/Susan-Jürgen.dvdproj/Contents/PkgInfo','0') 

再次ü正確地顯示出來。

從MySQL命令行客戶端，我SELECT這個路徑：

mysql> select * from files where path like '%susan%'; 

...和響應：

+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------+-----------+------+---------------+ 
| ID  | path                                         | dir | google_id | md5 | deleted_local | 
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------+-----------+------+---------------+ 
| 644990 | /Volumes/Mac Stadium Shuttle 1/DIG2008060702/files/Susan-Ju?rgen.dvdproj/Contents/PkgInfo                    | 0 | NULL  | NULL | 0    | 
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------+-----------+------+---------------+ 

...注意到于爾根的ü顯示爲u?（ Ju？rgen）

我一直在努力確保：

• 該php.ini中具有默認字符集爲UTF-8
• 表的默認字符集是UTF8
• 數據庫連接被定義爲連接UTF8

我添加phpinfo();附近的此腳本的頂部（在ini_set()之後）並從CLI運行它。 default_charset => UTF-8 => UTF-8顯示在響應中。

在腳本中連接數據庫後，我添加了echo mysql_client_encoding($link);並且腳本打印爲utf8。

而且，我跑：

mysql> show variables like 'char%';

響應：

+--------------------------+--------------------------------------------------------+ 
| Variable_name   | Value             | 
+--------------------------+--------------------------------------------------------+ 
| character_set_client  | utf8             | 
| character_set_connection | utf8             | 
| character_set_database | utf8             | 
| character_set_filesystem | binary             | 
| character_set_results | utf8             | 
| character_set_server  | utf8             | 
| character_set_system  | utf8             | 
| character_sets_dir  | /usr/local/mysql-5.6.24-osx10.8-x86_64/share/charsets/ | 
+--------------------------+--------------------------------------------------------+ 
8 rows in set (0.05 sec) 

那麼，我究竟做錯了什麼？

編輯表的結構是：

mysql> DESCRIBE files; 
+---------------+------------------+------+-----+---------+----------------+ 
| Field   | Type    | Null | Key | Default | Extra   | 
+---------------+------------------+------+-----+---------+----------------+ 
| ID   | int(11) unsigned | NO | PRI | NULL | auto_increment | 
| path   | varchar(510)  | YES | UNI | NULL |    | 
| dir   | enum('0','1') | YES |  | 0  |    | 
| google_id  | varchar(255)  | YES |  | NULL |    | 
| md5   | varchar(255)  | YES |  | NULL |    | 
| deleted_local | enum('0','1') | YES |  | 0  |    | 
+---------------+------------------+------+-----+---------+----------------+ 
6 rows in set (0.00 sec) 

ANOTHER編輯：

mysql> show create table files; 
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 
| Table | Create Table                                                                                                                     | 
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 
| files | CREATE TABLE `files` (
     `ID` int(11) unsigned NOT NULL AUTO_INCREMENT, 
     `path` varchar(510) CHARACTER SET latin1 DEFAULT NULL, 
     `dir` enum('0','1') CHARACTER SET latin1 DEFAULT '0', 
     `google_id` varchar(255) CHARACTER SET latin1 DEFAULT NULL, 
     `md5` varchar(255) CHARACTER SET latin1 DEFAULT NULL, 
     `deleted_local` enum('0','1') CHARACTER SET latin1 DEFAULT '0', 
     PRIMARY KEY (`ID`), 
     UNIQUE KEY `path` (`path`) 
) ENGINE=InnoDB AUTO_INCREMENT=961879 DEFAULT CHARSET=utf8 | 
    +-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 
    1 row in set (0.04 sec) 

Answer 1

如在第二編輯所示，路徑列具有latin1的字符集，即使該表默認爲UTF8。也許你已經通過改變現有的桌子進入這個狀態？

試試你的數據庫表字段的ALTER TABLE files MODIFY path VARCHAR(510) CHARACTER SET utf8;

Answer 2

1.設置整理類型utf8_unicode_ci在meta標籤

2.change。

META HTTP-當量= 「內容類型」 CONTENT = 「text/html的;字符集= UTF-8」

可以使用回波函數utf8_encode（$值）;在你的頁面中。