Hi All
I have only just started using inheritance etc and am lost a bit.
I am using the DB pear package but I am writing a class that will hopefully
use the pear package.
My class uses extends DB after the name of it.
When I call the connect function that is within the DB class it works with
no problem but when I try and use the query function I get the function does
not exist error message. Having looked in the DB pear package files I have
found that the connect function is within the main DB class in DB.php but
the query function is in the common.php file.
How do I go about it so that my class can use every function within the DB
class.
Full Version: Problem making a class extending another
Peter wrote:
| QUOTE |
| Hi All I have only just started using inheritance etc and am lost a bit. I am using the DB pear package but I am writing a class that will hopefully use the pear package. My class uses extends DB after the name of it. When I call the connect function that is within the DB class it works with no problem but when I try and use the query function I get the function does not exist error message. Having looked in the DB pear package files I have found that the connect function is within the main DB class in DB.php but the query function is in the common.php file. How do I go about it so that my class can use every function within the DB class. To get further help you should present some code you are using. And I |
don't mean the code of the pear class. I mean just the code you use to
use the pear class.
Regards
Stefan
| QUOTE |
| To get further help you should present some code you are using. And I don't mean the code of the pear class. I mean just the code you use to use the pear class. Regards Stefan |
Hi
I have taken out any unnecessary code.
class my_class extends DB
{
function check_user($user_name)
{
global $_SERVER;
$sql = 'select * from users where username =
''.htmlspecialchars($user_name).'' AND browser =
md5(''.mysql_real_escape_string($_SERVER['HTTP_USER_AGENT']).'') AND
session_id = md5(''.htmlspecialchars(session_id()).'')';
$confirm_user = parent::query($sql);
if ($confirm_user->numRows()==1)
{
$_SESSION['logged_in'] = true;
}
}
}
as you can see I have tried parent::query($sql); I have also tried
DB::query($sql); but that does not work either, in both cases it displays an
error saying the following:-
Fatal error: Call to undefined function: db() in
/home/petermcd/public_html/the.php on line 25
Peter wrote:
| QUOTE |
| To get further help you should present some code you are using. And I don't mean the code of the pear class. I mean just the code you use to use the pear class. Regards Stefan Hi I have taken out any unnecessary code. class my_class extends DB { function check_user($user_name) { global $_SERVER; $sql = 'select * from users where username = ''.htmlspecialchars($user_name).'' AND browser = md5(''.mysql_real_escape_string($_SERVER['HTTP_USER_AGENT']).'') AND session_id = md5(''.htmlspecialchars(session_id()).'')'; $confirm_user = parent::query($sql); if ($confirm_user->numRows()==1) { $_SESSION['logged_in'] = true; } } } as you can see I have tried parent::query($sql); I have also tried DB::query($sql); but that does not work either, in both cases it displays an error saying the following:- Fatal error: Call to undefined function: db() in /home/petermcd/public_html/the.php on line 25 I'm not very familar with the pear packages. As I can see is query a |
method of a class called DB. And since you derived your class of DB you
should simply call query() without anything before (e.g. parent or DB).
Another thing that makes me stuck is that the error message tells you
something about a function called db() and I don't see such a function
in your code?!
Regards
Stefan
| QUOTE |
| I'm not very familar with the pear packages. As I can see is query a method of a class called DB. And since you derived your class of DB you should simply call query() without anything before (e.g. parent or DB). Another thing that makes me stuck is that the error message tells you something about a function called db() and I don't see such a function in your code?! Regards Stefan |
Sorry the error message should have been
Fatal error: Call to undefined function: query() in
/home/petermcd/public_html/the.php on line 25
I have tried just calling it by the function name and this has the same
result, I am presuming it is the way that it calls this function.
Peter wrote:
| QUOTE |
| I'm not very familar with the pear packages. As I can see is query a method of a class called DB. And since you derived your class of DB you should simply call query() without anything before (e.g. parent or DB). Another thing that makes me stuck is that the error message tells you something about a function called db() and I don't see such a function in your code?! Regards Stefan Sorry the error message should have been Fatal error: Call to undefined function: query() in /home/petermcd/public_html/the.php on line 25 I have tried just calling it by the function name and this has the same result, I am presuming it is the way that it calls this function. Ok after reading I found out that the query function is not a member of |
the DB class.
Its member of the connection class. Use like this:
$conn = DB::connect ($dsn, $options);
$result = $conn->query ($query_str);
More information at:
http://www.kitebird.com/articles/peardb.html
May you ask aunt google from time to time ;)
Regards
Stefan
| QUOTE |
| Ok after reading I found out that the query function is not a member of the DB class. Its member of the connection class. Use like this: $conn = DB::connect ($dsn, $options); $result = $conn->query ($query_str); More information at: http://www.kitebird.com/articles/peardb.html May you ask aunt google from time to time ;) Regards Stefan |
Thanks Stefan much apreciated, I did have a search on google but couldn't
find anything, obviously looking for the wrong thing :>
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.