fbsql_query - Send a FrontBase query
Вернуться к: FrontBase Функции
fbsql_query
(PHP 4 >= 4.0.6, PHP 5, PHP 7)
fbsql_query — Send a FrontBase query
Описание
$query
[, resource $link_identifier
[, int $batch_size
]] )
Sends a query to the currently active database on
the server.
If the query succeeds, you can call fbsql_num_rows() to find out how many rows were returned for a SELECT statement or fbsql_affected_rows() to find out how many rows were affected by a DELETE, INSERT, REPLACE, or UPDATE statement.
Список параметров
-
query -
The SQL query to be executed.
Замечание:
The query string shall always end with a semicolon.
-
link_identifier -
Идентификатор соединения FrontBase, полученный из fbsql_connect() или fbsql_pconnect().
Если он не был указан, то функция попытается найти открытое соединение к серверу FrontBase, в случае неудачи попытается создать новое, как если бы fbsql_connect() была вызвана без аргументов.
-
batch_size -
Возвращаемые значения
fbsql_query() returns TRUE (non-zero) or FALSE
to indicate whether or not the query succeeded. A return value
of TRUE means that the query was legal and could be executed by
the server. It does not indicate anything about the number of
rows affected or returned. It is perfectly possible for a query
to succeed but affect no rows or return no rows.
For SELECT statements, fbsql_query() returns a new result identifier that you can pass to fbsql_result().
fbsql_query() will also fail and return FALSE if you
don't have permission to access the table(s) referenced by the query.
Примеры
The following query is syntactically invalid, so
fbsql_query() fails and returns FALSE:
Пример #1 fbsql_query() example
<?php
$result = fbsql_query("SELECT * WHERE 1=1")
or die ("Invalid query");
?>
The following query is semantically invalid if
my_col is not a column in the table
my_tbl, so fbsql_query()
fails and returns FALSE:
Пример #2 fbsql_query() example
<?php
$result = fbsql_query ("SELECT my_col FROM my_tbl;")
or die ("Invalid query");
?>
Смотрите также
- fbsql_affected_rows() - Возвращает число затронутых строк в предыдущем FrontBase действии
- fbsql_db_query() - Send a FrontBase query
- fbsql_free_result() - Free result memory
- fbsql_result() - Get result data
- fbsql_select_db() - Select a FrontBase database
- fbsql_connect() - Open a connection to a FrontBase Server
Вернуться к: FrontBase Функции