pg_send_query

(PHP 4 >= 4.2.0, PHP 5)

pg_send_query --  Sends asynchronous query

Descripción

bool pg_send_query ( resource connection, string query )

bool pg_send_query ( string query )

pg_send_query() sends a query or queries asynchronously to the connection. Unlike pg_query(), it can send multiple queries at once to PostgreSQL and get the results one by one using pg_get_result().

Script execution is not blocked while the queries are executing. Use pg_connection_busy() to check if the connection is busy (i.e. the query is executing). Queries may be cancelled using pg_cancel_query().

Although the user can send multiple queries at once, multiple queries cannot be sent over a busy connection. If a query is sent while the connection is busy, it waits until the last query is finished and discards all its results.

Lista de parámetros

connection

PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

query

The SQL statement or statements to be executed.

Valores retornados

Devuelve TRUE si todo se llevó a cabo correctamente, FALSE en caso de fallo.

Use pg_get_result() to determine the query result.

Ejemplos

Ejemplo 1. pg_send_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";
  
  
$res2 = pg_get_result($dbconn);
  echo
"Second call to pg_get_result(): $res2\n";
  
$rows2 = pg_num_rows($res2);
  echo
"$res2 has $rows2 records\n";
?>

El resultado del ejemplo seria:

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

Second call to pg_get_result(): Resource id #4
Resource id #4 has 1 records

Ver también

pg_query()
pg_cancel_query()
pg_get_result()
pg_connection_busy()

Hosting by: hurra.com
Generated: 2007-01-26 18:00:48