void pq\Cancel::cancel()

Perform the cancellation request.

Params:

None.

Throws:

Example:

<?php

$conn = new pq\Connection;
$cancel = new pq\Cancel($conn);

$conn->execAsync("SELECT pg_sleep(1)");
$cancel->cancel();

var_dump($conn->getResult());

?>

Yields:

object(pq\Result)#4 (8) {
  ["status"]=>
  int(7)
  ["statusMessage"]=>
  string(11) "FATAL_ERROR"
  ["errorMessage"]=>
  string(47) "ERROR:  canceling statement due to user request"
  ["numRows"]=>
  int(0)
  ["numCols"]=>
  int(0)
  ["affectedRows"]=>
  int(0)
  ["fetchType"]=>
  int(0)
  ["autoConvert"]=>
  int(65535)
}