#29763 [Opn->Bgs]: mysql_pconnect silently ignores the CLIENT_FOUND_ROWS flag

ID: 29763 Updated by: sniper@php.net Reported By: sigurd at totallydigital dot co dot nz -Status: Open +Status: Bogus Bug Type: MySQL related Operating System: Debian Linux PHP Version: 4.3.8 New Comment: Why would it tell you it changed something when it doesn't? If you update a field with same data as it was before -> there is no _change_ or affected rows. Try the same with the mysql console. Previous Comments: ------------------------------------------------------------------------ [2004-08-19 19:46:45] sigurd at totallydigital dot co dot nz Description: ------------ PHP 4.3.8-5 installed as 'unstable' package from Debian recently. Background: The CLIENT_FOUND_ROWS MySQL connection flag is a vital means for verifying that an UPDATE has affected a row (without doing an inefficient 'select' afterwards to doublecheck!) Under 'normal' connection, however, an UPDATE that "updates" values to what they are in the database already will not increment the affected-row-count, hence the purpose of the CLIENT_FOUND_ROWS flag, which when set, DOES return rows that matched the WHERE clause of the UPDATE. Bug: When connecting to a server with $connectionid = mysql_pconnect($serveraddress, $username, $password, 2); The CLIENT_FOUND_ROWS behaviour is not experienced. Merely changing this to a standard connect, does work. (note the addition of a fourth parameter!) E.g.; $connectionid = mysql_pconnect($serveraddress, $username, $password, false, 2); Reproduce code: --------------- $connectionid = mysql_pconnect($serveraddress, $username, $password, 2); // aasume Field was not 1 to begin with; mysql_query("UPDATE Field=1 WHERE SomeField=1"); print mysql_affected_rows(); // 1 mysql_query("UPDATE Field=1 WHERE SomeField=1"); print mysql_affected_rows(); // 0 // again for good measure. mysql_query("UPDATE Field=5 WHERE SomeField=1"); print mysql_affected_rows(); // 1 Expected result: ---------------- Each update shold produce an affected row count of one. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=29763&edit=1