block file

Hello

I need block a file while the user edit.

any ideas?

Thanks

Mario
Mario_castroAsked:
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rstorey2079Commented:
Try using flock() function.  There is an example here: http://us2.php.net/manual/en/function.flock.php
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Mario_castroAuthor Commented:
and when verify that the file is lock?
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rstorey2079Commented:
After PHP opens the file using fopen, you can verify that you are the only one using it by calling flock().  If flock() returns false, that means that you could not obtain a lock on the file.

Here's the example:

<?php

$fp = fopen("/tmp/lock.txt", "w+");

if (flock($fp, LOCK_EX)) { // do an exclusive lock
    fwrite($fp, "Write something here\n");
    flock($fp, LOCK_UN); // release the lock
} else {
    echo "Couldn't lock the file !";
}

fclose($fp);

?>

Hope that answers your question.
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