pg_send_query

(PHP 4 >= 4.2.0, PHP 5)

Описание

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.

Список параметров

Возвращаемые значения

Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.

Use pg_get_result() to determine the query result.

Примеры

Пример 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"; ?> Результат выполнения данного примера: 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

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