File Lock?

[stylusrose]

I was trying to write a script that outputs to a file. the problem is, I don't want more than one user to be able to run that script at time.

 

I know, mysql would probably be a better idea. But I'm just tinkering around with ideas.

 

So, is there anyway to prevent a user to access a script whilst it is in use?

[skatermike21988]

you can use mysql and then an if statement like

if($inuse=="yes") {
echo"Sorry the file is currently in use, please try again later";
}
else
{
//DISPLAY DATA HERE
}

 

And then have like a cron job script run to where if the last time it was used was 10 mins ago or so, it clears the mysql, just incase the user exits his/her browser, and have a link to exit, so that way it clears the data.

 

I know it sounds kinda confusing but I haven't been to sleep yet, so hope this helps

[stylusrose]

hehe...

 

I was actually wondering if there was a way to do it without mysql 0___0

[DarkWater]

Look into the flock() function.

 

 

http://us2.php.net/manual/en/function.flock.php

 

[kenrbnsn]

You can use the flock() function.

 

At the start of the script, do

<?php
$fp = fopen('dummy.file','w');
if (flock($fp, LOCK_EX)) {
//
//   do your work
//
} else {
// issue the error message
}
fclose($fp);
?>

 

Ken

(beaten to it)

[stylusrose]

oh, well that was easy o.o;

 

thanks! ^.^