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   1 # interface pq\Exception
   2
   3 A base interface for all pq\Exception classes.
   4
   5 ## Constants:
   6
   7 * INVALID_ARGUMENT
   8   An invalid argument was passed to a method (pq\Exception\InvalidArgumentException).
   9 * RUNTIME
  10   A runtime exception occurred (pq\Exception\RuntimeException).
  11 * CONNECTION_FAILED
  12   The connection failed (pq\Exception\RuntimeException).
  13 * IO
  14   An input/output exception occurred (pq\Exception\RuntimeException).
  15 * ESCAPE
  16   Escaping an argument or identifier failed internally (pq\Exception\RuntimeException).
  17 * UNINITIALIZED
  18   An object's constructor was not called (pq\Exception\BadMethodCallException).
  19 * BAD_METHODCALL
  20   Calling this method was not expected (yet) (pq\Exception\BadMethodCallException).
  21 * SQL
  22   SQL syntax error (pq\Exception\DomainException).
  23 * DOMAIN
  24   Implementation domain error (pq\Exception\DomainException).
  25
  26
  27 ## Example:
  28
  29         <?php
  30
  31         try {
  32                 $connection = new pq\Connection;
  33         } catch (pq\Exception $e) {
  34                 printf("%s (%d)\n", $e->getMessage(), $e->getCode());
  35         }
  36
  37         ?>