5/8/2023 0 Comments Wise memory optimizer reddit![]() Unlike old mysql_* functions, which can be used anywhere in the code, PDO instance is stored in a regular variable, which means it can be inaccessible inside functions - so, one has to make it accessible, by means of passing it via function parameters or using more advanced techniques, such as IoC container.Important notes for the late mysql extension users: With all aforementioned variables properly set, we will have proper PDO instance in $pdo variable. Throw new \ PDOException ( $e -> getMessage (), (int) $e -> getCode ()) $pdo = new PDO ( $dsn, $user, $pass, $options ) PDO :: ATTR_DEFAULT_FETCH_MODE => PDO :: FETCH_ASSOC , PDO :: ATTR_ERRMODE => PDO :: ERRMODE_EXCEPTION , $dsn = "mysql:host= $host dbname= $db charset= $charset " Here goes an example for mysql: $host = '127.0.0.1' ![]() Note that it's important to follow the proper format - no spaces or quotes or other decorations have to be used in DSN, but only parameters, values and delimiters, as shown in the manual. Where DSN is a semicolon-delimited string, consists of param=value pairs, that begins from the driver name and a colon: mysql : host = localhost dbname = test port = 3306 charset = utf8mb4ĭriver ^ ^ colon ^ param = value pair ^ semicolon
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