[thelist] [php] Fatal error: Call to a member function on a non-object

Burhan Khalid thelist at meidomus.com
Wed Dec 22 05:15:13 CST 2004


Tim Burgan wrote:
> Hello,
> 
> 
> I have a database driven (MS Access 2000) PHP website that runs fine on 
> my localhost (Apache, WinXP), but when I upload it to the web host (IIS) 
> and try to access a page I receive the following error:
> 
> Fatal error: Call to a member function on a non-object in 
> c:\XXX\inc\dbConnOpen.php on line 17
> 
> The file in question contains code that forms a connection to the 
> database. I've used this EXACT same code on this same website for the 
> last 8 months with no problem.. then when I upload the WHOLE site 
> again.. it doesn't work.
> 
> Here's the contents of the above file:
> 
>  /* Open database connection */
>    $db_connection = new COM("ADODB.Connection") or die("Cannot start ADO");
>      $db_connstr = "DRIVER={Microsoft Access Driver (*.mdb)};DBQ=" .
>                   realpath("directory/database.mdb") . ";DefaultDir=" .
>                   realpath("directory");
>    $db_connection->open($db_connstr);      // THIS IS LINE 17
> 
> 
> Can anyone shed some light onto what this error means in plain english, 
> and possible what I can do.

1. Check if PHP versions match
2. Check if there were any problems with permissions

The error means that $db_connection was not an object of the COM class 
(in other words, it couldn't create the ADODB com object).

Do a print_r($db_connection) to find out what it is.


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