$dml = "insert into table ...";
mysql_query($dml,$con);
The above insert something into a table.then you can check if it succeeded by either
if('' == mysql_error($con))...
or
if($id = mysql_insert_id($con))...
What's your choice and reason?
BTW,will the below still have $id fetched when running both of them,I've not tried yet:
$err = mysql_error($con);
$id = mysql_insert_id($con);
I use mysql_error. I do so b/c it is more consistent with error checking in other parts of the program, and I will know why the error occurred instead of just receiving a false value.
mysql_error() will always throw an error if the insert operation fails, so fetching the insert_id is not really necessary as far as I can see, unless you need it for further processing.
Your code block should work, however the manual recommends to run insert_id() directly after issuing the query.
Note: Because mysql_insert_id() acts on the last performed query, be sure to call mysql_insert_id() immediately after the query that generates the value.
