pg_send_prepare

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

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

Опис

pg_send_prepare(PgSql\Connection $connection, string $statement_name, string $query): int|bool

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.

Параметри

connection: Примірник PgSql\Connection.
statement_name: 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 parameterized 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.

Значення, що повертаються

Returns true on success, false or 0 on failure. Use pg_get_result() to determine the query result.

Журнал змін

Версія	Опис
8.1.0	Тепер параметр `connection` має бути примірником PgSql\Connection. Раніше очікувався resource.

Приклади

Приклад #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);
  }
  
?>

Прогляньте також

pg_connect() - Open a PostgreSQL connection
pg_pconnect() - Open a persistent PostgreSQL connection
pg_execute() - Sends a request to execute a prepared statement with given parameters, and waits for the result
pg_send_execute() - Sends a request to execute a prepared statement with given parameters, without waiting for the result(s)
pg_send_query_params() - Submits a command and separate parameters to the server without waiting for the result(s)