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(PHP 5)

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

Description

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.

Parameters

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.

Return Values

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

Examples

Example 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);
  }
  
?>

Related Function(s)

pg_prepare()

pg_get_result()

pg_connect()

pg_pconnect()

pg_execute()

pg_send_execute()

pg_send_query_params()