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Cancel an asynchronous query


pg_cancel_query

(PHP 4 >= 4.2.0, PHP 5)

pg_cancel_query Cancel an asynchronous query

Description

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().

Parameters

connection

PostgreSQL database connection resource.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 pg_cancel_query() example

<?php
  $dbconn 
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);
  echo 
"First call to pg_get_result(): $res1\n";
  
$rows1 pg_num_rows($res1);
  echo 
"$res1 has $rows1 records\n\n";
  
  
// Cancel the currently running query.  Will be the second query if it is
  // still running.
  
pg_cancel_query($dbconn);
?>

The above example will output:

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

See Also



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