i am using wamp and if i run a script that insert data into mysql and lets say i want to stop the script i click at the stop button in the browzer but the script contnues working

Posted on 2008-10-09
Medium Priority
Last Modified: 2012-06-21
i am using wamp and if i run a script that insert data into mysql and lets say i want to stop the script i click at the stop button in the browzer but the script contnues working

and how i fix this
Question by:mgtm3
  • 2
LVL 51

Accepted Solution

Steve Bink earned 1200 total points
ID: 22683941
Once the script begins running, there's not a lot of option for you.  The server will not know that the client has terminated the load, since the client is not involved until *after* the script terminates.  The script will always continue running until it ends, either normally or through a fatal error.
LVL 25

Assisted Solution

by:Marcus Bointon
Marcus Bointon earned 800 total points
ID: 22685697
That's not quite true. PHP scripts will normally terminate on user cancellation unless you call ignore_user_abort(): http://www.php.net/manual/en/function.ignore-user-abort.php

What generally will carry on even if the PHP script stops is any pending mysql queries. This only applies to the one that is running at the time of cancellation - it won't do any more after that.
LVL 51

Expert Comment

by:Steve Bink
ID: 22686049
I think that will be for "stateful" protocols, not HTTP.  Also, from the "Notes" section for that function:

"PHP will not detect that the user has aborted the connection until an attempt is made to send information to the client."

If the client returns nothing (as an HTTP client would if the user has aborted the page load), PHP may not realize that the connection was actually aborted.  In other words, the script continues, and PHP tries to push everything, but it is ignored on the client side.

Check the headers of an HTTP page load, and you'll see what I mean.  The client will send a header for each request, but will send nothing for an early termination (such as pressing 'ESC' or clicking "Stop").

Of course a simple experiment will prove this out.  Create a really long HTML page with a query at the end of it.  Break the page load, then check to see if the query executed.  IME, it always has.

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Password hashing is better than message digests or encryption, and you should be using it instead of message digests or encryption.  Find out why and how in this article, which supplements the original article on PHP Client Registration, Login, Logo…
This article discusses how to create an extensible mechanism for linked drop downs.
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

624 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question