Question

I stumbled in the community for my problem but I could not find a solution-maybe it is to specific. The following sequence of functions / operations I am executing in PHP:

1. construct a object of class_1
2. function in class_1 connects to MySQL without a defined link identifier
3. then I create a temporary table [..functions in class_1 do something..]
4. a new function is called which create a object_2 of class_2
5. in object_2 I create a new MySQL connection with the parameter of creating a new link true and link identfier
6. I close the MySQL connection with MySQL_close in object_2 with the link identifier
7. in object_1 the temporary table still not exists / it try to reconnect to MySQL automatically

If I do not create object_2 everything works fine. what I am doing wrong?

Answer 1

Thanks to everybody for help finding a solution. The link identifier solution is as mentioned bit poor for me. at php.net is a detailed description of my problem and some hints how to solve:

Here is how shared links work:
– Each link is a resource. mysql_connect() by default looks for a resource with the same paramaters. If one exists, it will return the
existing resource.
– Every assignment of that resource to a variable increases the resource’s reference count.
– When the reference is decremented to zero, the underlying TCP/socket connection is closed.
– Every assignment of a variable away from that resource decrements the reference count. (This includes a function level
variable going out of scope)
– mysql_close() also decrements the reference count.

Note the last two points: mysql_close() and reassignment of a
variable decrement the link’s reference count.