PDO prepare silently fails
- by Wabbitseason
I'm experimenting with PHP's session_set_save_handler and I'd like to use a PDO connection to store session data.
I have this function as a callback for write actions:
function _write($id, $data) {
logger('_WRITE ' . $id . ' ' . $data);
try {
$access = time();
$sql = 'REPLACE INTO sessions SET id=:id, access=:access, data=:data';
logger('This is the last line in this function that appears in the log.');
$stmt = $GLOBALS['db']->prepare($sql);
logger('This never gets logged! :(');
$stmt->bindParam(':id', $id, PDO::PARAM_STR);
$stmt->bindParam(':access', $access, PDO::PARAM_INT);
$stmt->bindParam(':data', $data, PDO::PARAM_STR);
$stmt->execute();
$stmt->closeCursor();
return true;
} catch (PDOException $e) {
logger('This is never executed.');
logger($e->getTraceAsString());
}
}
The first two log messages always show up, but the third one right after $stmt = $GLOBALS['db']->prepare($sql) never makes it to the log file and there's no trace of an exception either.
The sessions db table remains empty.
The log message from the _close callback is always present.
Here's how I connect to the database:
$db = new PDO('mysql:host=' . DBHOST . ';dbname=' . DBNAME, DBUSER, DBPASS);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
I have PHP 5.2.10.
I tried to simply run $GLOBALS['db']->exec($sql) with a "manually prepared" $sql content, but it still failed silently. The query itself is all right I was able to execute it via the db console.
