sybase_fetch

Description

array sybase_fetch_assoc ( resource result )

Returns an array that corresponds to the fetched row, or FALSE if there are no more rows.

注: 本函数仅适用于 Sybase 的 CT 库接口，而不适用于 DB 库。

sybase_fetch_assoc() is a version of sybase_fetch_row() that uses column names instead of integers for indices in the result array. Columns from different tables with the same names are returned as name, name1, name2, ..., nameN.

An important thing to note is that using sybase_fetch_assoc() is NOT significantly slower than using sybase_fetch_row(), while it provides a significant added value.

add a note User Contributed Notes

elektrotechnik at onlinehome dot de
06-May-2004 07:33


Very often you see constructs like this to loop thru a result set:



while ($row = sybase_fetch_assoc($result))

{

    while (current($row)) // or  while (current($row) != false)

    {

        $data = current($row);

        $key = key($row);

                

        //

        // do stuff here

        //

        

    next($row);    

    }

}



Do not use it in this way! You have to write the inner while loop this way:



while (current($row) !== false)



If you just use 

while (current($row) != false)

or

while (current($row))



you could be in trouble and loose some data. In my case I had a query which contained the following statement:



datediff(dd, date1, date2) as days



Now if days computes to 0 then the two while loop examples from above will exit (because the 0 is 'seen' as false). Therefore you must use while (current($row) !== false) which will not exit if one of you data contains 0.



Hth,

rgds,

Marcus

jpeterso at moody dot edu
02-Jul-2003 03:51


For users that want this function in other applications, use this function.  I have been using it for over a year with great success.



function sybase_fetch_assoc($query_result){

        $row = sybase_fetch_array($query_result);

        $values = "";

        if(is_array($row))

        {

        while(list($key, $val) = each($row))

            {

                $values[$key] = $val;

            }

        }

    return $values;

}

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