Podręcznik PHP
Poprzedni |  | Następny

# pg_send_prepare

(PHP 5 >= 5.1.0RC1)

pg_send_prepare -- Sends a request to create a prepared statement with the given parameters, without waiting for completion.

## Opis

bool pg_send_prepare ( resource connection, string stmtname, string query )

Sends a request to create a prepared statement with the given parameters, without waiting for completion.

This is an asynchronous version of pg_prepare(): it returns `TRUE` if it was able to dispatch the request, and `FALSE` if not. After a successful call, call pg_get_result() to determine whether the server successfully created the prepared statement. The function's parameters are handled identically to pg_prepare(). Like pg_prepare(), it will not work on pre-7.4 versions of PostgreSQL.

## Parametry

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().

stmtname

  The name to give the prepared statement. Must be unique per-connection. If "" is specified, then an unnamed statement is created, overwriting any previously defined unnamed statement.

query

  The parameterised SQL statement. Must contain only a single statement. (multiple statements separated by semi-colons are not allowed.) If any parameters are used, they are referred to as $1, $2, etc.

## Zwracane wartości

Returns `TRUE` on success, `FALSE` on failure. Use pg_get_result() to determine the query result.

## Przykłady

Przykład 1. Using pg_send_prepare()

`<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
// Prepare a query for execution
if (!pg_connection_busy($dbconn)) {
pg_send_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');
$res1 = pg_get_result($dbconn);
}
// Execute the prepared query. Note that it is not necessary to escape
// the string "Joe's Widgets" in any way
if (!pg_connection_busy($dbconn)) {
pg_send_execute($dbconn, "my_query", array("Joe's Widgets"));
$res2 = pg_get_result($dbconn);
}
// Execute the same prepared query, this time with a different parameter
if (!pg_connection_busy($dbconn)) {
pg_send_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));
$res3 = pg_get_result($dbconn);
}
?>`

## Patrz także

pg_connect()
pg_pconnect()
pg_execute()
pg_send_execute()
pg_send_query_params()

Poprzedni | Spis treści | Następny
pg_send_execute | Początek rozdziału | pg_send_query_params