#41705 [Opn->Bgs]: Same processes of one session are executed simultaneously

ID: 41705 Updated by: tony2001@php.net Reported By: laden100 at mail dot ru -Status: Open +Status: Bogus Bug Type: Session related Operating System: Solaris PHP Version: 5.2.3 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Previous Comments: ------------------------------------------------------------------------ [2007-06-15 17:24:11] laden100 at mail dot ru Description: ------------ If more than one process of the same session is created in the one time, this processes are executed simultaneously instead of being executed one after another. Reproduce code: --------------- <?php //For example this script is asked three times simultaneously from the one user, siting on the one session ID require_once('db_fns.php'); //requiring mysql functions and connecting to database require_once('session.php'); //creating session from MySQL storage $sessid = session_id(); $example = db_query_onerow("SELECT example FROM table WHERE id=1"); //etc the field example is "1" by default. So all three times every process has the value "1" echo "Example: $example"; //So every time we will get "1" $lock = db_query_onerow("SELECT GET_LOCK('database.lock_{$sessid}', 60);"); //Getting lock to test the bug of PHP $anotherexample = db_query_onerow("SELECT example FROM table WHERE id=1"); //This Select will be not executed at the one time because of MySQL locks and will give us the right values echo "Another Example: $anotherexample"; //At the first time it will be "1" and two other time "0" db_query_write("UPDATE table SET example=0 WHERE id=1"); //Setting the field example to 0 $lock = db_query_onerow("SELECT RELEASE_LOCK('database.lock_{$sessid}')"); //Getting lock to test the bug ?> Expected result: ---------------- Example: 1 Another Example: 1 Example: 0 Another Example: 0 Example: 0 Another Example: 0 Actual result: -------------- Example: 1 Example: 1 Example: 1 Another Example: 1 Another Example: 0 Another Example: 0 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41705&edit=1