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Cancel an asynchronous query (PHP 4 >= 4.2.0, PHP 5)
bool pg_cancel_query ( resource connection )

pg_cancel_query() cancels an asynchronous query sent with pg_send_query(), pg_send_query_params() or pg_send_execute(). You cannot cancel a query executed using pg_query().



PostgreSQL database connection resource.

Return Values

Returns TRUE on success or FALSE on failure.


Example 1903. pg_cancel_query() example

= pg_connect("dbname=publisher") or die("Could not connect");

 if (!
pg_connection_busy($dbconn)) {
pg_send_query($dbconn, "select * from authors; select count(*) from authors;");
$res1 = pg_get_result($dbconn);
"First call to pg_get_result(): $res1\n";
$rows1 = pg_num_rows($res1);
"$res1 has $rows1 records\n\n";
// Cancel the currently running query.  Will be the second query if it is
 // still running.

The above example will output:

First call to pg_get_result(): Resource id #3
Resource id #3 has 3 records