Re: PDO fetch performance problems with many bindparameters

Hi Christoph, On 28/08/2020 22:57, Christoph M. Becker wrote: > Can we be certain that the relevant bits of the formerly _reserved_flags > are zero-filled for all existing drivers? We can, that's basically the premise of the PR itself: 1. The flags are in the pdo_dbh_t struct which is the dbh->inner part 2. dbh->inner = ecalloc(1, sizeof(pdo_dbh_t)): 3. stmt->dbh is set as dbh->inner, in prepare and query 4. drivers can eventually set some bits to 1. A few quick links: https://github.com/php/php-src/blob/658f6ff2dae42c4f2b5c6f8d6adc8c8f09b52b47/ext/pdo/php_pdo_driver.h#L514 https://github.com/php/php-src/blob/658f6ff2dae42c4f2b5c6f8d6adc8c8f09b52b47/ext/pdo/pdo_dbh.c#L562 https://github.com/php/php-src/blob/658f6ff2dae42c4f2b5c6f8d6adc8c8f09b52b47/ext/pdo/pdo_dbh.c#L1085 https://github.com/php/php-src/blob/658f6ff2dae42c4f2b5c6f8d6adc8c8f09b52b47/ext/pdo/pdo_dbh.c#L1481 Cheers -- Matteo Beccati Development & Consulting - http://www.beccati.com/