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   1 # void pq\Cursor::__construct(pq\Connection $conn, int $flags, string $query[, bool $async = FALSE])
   2
   3 Declare a cursor.
   4 See pq\Connection::declare().
   5
   6 ## Params:
   7
   8 * pq\Connection $connection
   9   The connection on which the cursor should be declared.
  10 * int $flags
  11   See pq\Cursor constants.
  12 * string $query
  13   The query for ehich the cursor should be opened.
  14 * bool $async
  15   Whether to declare the cursor [asynchronously](pq/Connection/: Asynchronous Usage).
  16
  17 ## Throws:
  18
  19 * pq\Exception\InvalidArgumentException
  20 * pq\Exception\BadMethodCallException
  21 * pq\Exception\RuntimeException