PHP, ODBC, and nvarchar

By  on  

I stumbled upon an odd error using PHP's ODBC functions to query a SQL Server 2005 database. I was doing a basic SELECT statement to get the description of something when I encountered the following error:

Warning: odbc_exec() [function.odbc-exec]: SQL error: [unixODBC][FreeTDS][SQL Server]Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier., SQL state in SQLExecDirect in /home/web/file.php on line 4

It turns out that the PHP ODBC functions have a hard time pulling "nvarchar" data. Here's the ugly solution to getting nvarchar data:

SELECT CAST(CAST([DetailedDescription] AS VARCHAR(8000)) AS TEXT) AS ad FROM mytable WHERE active = 1

Not pretty but making it function is what counts.

Recent Features

  • By
    9 Mind-Blowing Canvas Demos

    The <canvas> element has been a revelation for the visual experts among our ranks.  Canvas provides the means for incredible and efficient animations with the added bonus of no Flash; these developers can flash their awesome JavaScript skills instead.  Here are nine unbelievable canvas demos that...

  • By
    CSS vs. JS Animation: Which is Faster?

    How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps? This article serves as a point-by-point...

Incredible Demos

  • By
    MooTools Font-Size Scroller with Cookie Save

    Providing users as many preferences as possible always puts a smile on the user's face. One of those important preferences is font size. I can see fine but the next guy may have difficulty with the font size I choose. That's why...

  • By
    CSS Vertical Center with Flexbox

    I'm 31 years old and feel like I've been in the web development game for centuries.  We knew forever that layouts in CSS were a nightmare and we all considered flexbox our savior.  Whether it turns out that way remains to be seen but flexbox does easily...

Discussion

  1. THANKS!!!
    muchas gracias.. ahora puedo seguir trabajando tranquilo.. justamante estaba teniendo problemas con un campo nvarchar.

  2. umberleigh

    Casting to varchar limits you to 8000 characters in a field.

    I found just casting to text works better, like so:

    print("SELECT CAST([column_name] AS TEXT) AS column_0 FROM table_name");
  3. Thanks , nice solve problem from sql server

  4. San

    Cast did the job ….

    Nice post !!!

  5. mohi

    not work!

    Warning: mssql_query() [function.mssql-query]: message: Incorrect syntax near ‘ASâ’. (severity 15) in /var/www/vhosts/fvc.ir/httpdocs/mssql.php on line 11

  6. Thank you very very much!
    And here is how to write value:
    http://stackoverflow.com/questions/7255703/utf-8-in-sql-server-2008-database-php

    $value = 'ŽČŘĚÝÁÖ';
    $value = iconv('UTF-8', 'UTF-16LE', $value); //convert into native encoding 
    $value = bin2hex($value); //convert into hexadecimal
    $query = 'INSERT INTO some_table (some_nvarchar_field)  VALUES(CONVERT(nvarchar(MAX), 0x'.$value.'))';
    
  7. thanks a lot. i was not shure what was the problem. In the sql management studio the data looks fine and in php is not. my first impresion was user rights for the data .. but after 1 hour of hair pulling :) i wandered if culd be the odbc … and like this i found your post

    thanks again

  8. Riyas

    Thanks for this solution. I was stuck at this problem and finally reached here

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!