(PHP 5 >= 5.3.0, PHP 7) Fetches a result row as an associative or numerically indexed array or both

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Execute a query

(PHP 5, PHP 7) Prepare a query for later binding of parameter placeholders and execution

(PECL mongo >=0.9.0) Validates this collection

(PHP 4, PHP 5, PHP 7) Open a persistent database connection

(PHP 4, PHP 5, PHP 7) Sets minimum error severity

(PHP 5 >= 5.5.0, PHP 7) Set a named transaction savepoint

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Fetch a result row as an associative array

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Get the flags associated with the specified field in a result

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Get the name of a field in a query result