mysql_data_seek help

[darkfreaks]

so i read that if mysql_num_rows ==0 that it will return a offset error is there a way to correct this? while still checking if the field does not exist.

[gizmola]

I'm not sure what you are asking here.  mysql_num_rows returns the number of rows in a result set. 

[darkfreaks]

I'm not sure what you are asking here.  mysql_num_rows returns the number of rows in a result set.

 

ysql_data_seek() moves the internal row pointer of the MySQL result associated with the specified result identifier to point to the specified row number. The next call to a MySQL fetch function, such as mysql_fetch_assoc(), would return that row.

 

row_number starts at 0. The row_number should be a value in the range from 0 to mysql_num_rows() - 1. However if the result set is empty ( mysql_num_rows() == 0), a seek to 0 will fail with a E_WARNING and mysql_data_seek() will return FALSE.

 

 

however if i enter 

 

somepage.php?modelID=0

somepage.php?modelID=NULL

somepage.php?modelID=

it just returns an empty model page which is fine.

 

but if i enter something which isnt in the database i get an offset error like

 

somepage.php?modelID=1

 

 

[gizmola]

I think it's fairly obvious that if the result set is empty, trying to move the result set pointer, is not something you should attempt.

[darkfreaks]

i fixed it just so you know the count  function was completely backwards. i coded it in an incremental for loop and i have no issues now