DB_common::query()
Synopsis
mixed &query (
string $query
,
mixed $params = array()
)
Описание
Runs a query
Can be used instead of
prepare() and
execute(), if you
set the $params parameter
and your query uses placeholders.
See
"Intro - Prepare & Execute"
for more information on this mode.
Parameter
-
string
$query -
the SQL query or the statement to prepare
-
mixed
$params -
array, string or numeric data to be added to the prepared statement. Quantity of items passed must match quantity of placeholders in the prepared statement: meaning 1 placeholder for non-array parameters or 1 placeholder per array element.
Return value
mixed - a new DB_result object for queries that return results (such as SELECT queries), DB_OK for queries that manipulate data (such as INSERT queries) or a DB_Error object on failure
Throws
| Error code | Error message | Reason | Solution |
|---|---|---|---|
| DB_ERROR_INVALID | invalid | SQL statement for preparing is not valid. | See the prepare() documentation, if you want to use a SQL statement using placeholders. |
| DB_ERROR_MISMATCH | mismatch | Quantity of parameters didn't match quantity of placeholders in the prepared statement. |
Check that the number of placeholders in the
prepare() statement passed to
$query equals the count of entries
passed to $params.
|
| DB_ERROR_NODBSELECTED | no database selected | No database was chosen. | Check the DSN in connect(). |
| every other error code | Database specific error | Check the database related section of the PHP-Руководство to detect the reason for this error. In the most cases a misformed SQL statement. I.e. using LIMIT in a SQL-Statement for an Oracle database. |
Замечание
This function can not be called statically.