sql_update() function updates one or several records in an SQL table. The elements passed are not automatically filtered against SQL injection attacks as with
sql_updateq(), so you must watch out for SQL injection attacks and use
sql_quote() functions to secure the content when necessary.
The function accepts 6 parameters:
$tableis the SQL table in question,
$expcontains the modifications to be made,
This function is principally used to modify values which use the same value as the column being updated, e.g.
Whenever data added with this function are likely to include apostrophes or originate from user data entry, it is important to secure the insert with the use of the