PEAR Справочное руководство
Пред.		След.

MDB_Common::fetchCol()

MDB_Common::fetchCol() -- Fetch a single column

Synopsis

require_once 'MDB.php';

array &fetchCol (resource $result, mixed [$colnum = 0])

Fetch a single column from a result set of a result set and free the result set.

resource $result: a valid resource returned by query() or executeQuery()
array $params: if supplied, prepareQuery()/ executeQuery() will be used with this array as execute parameters
mixed $colnum: which column to return (integer [column number, starting at 0] or string [column name])

array - the first row of results as an array indexed from 0 or a MDB_Error, if fail

Таблица 35-1. Возможные значения PEAR_Error

Error code	Error message	Reason	Solution
`MDB_ERROR_TRUNCATED`	`NULL`	The result set contains fewer then two columns	Check the SQL query or choose another *query()** function
every other error code		Database specific error	Check the database related section of PHP-Manual to detect the reason for this error. In the most cases a misformed SQL statment. Ie. using LIMIT in a SQL-Statment for an Oracle database.

Эта функция не должна вызываться статически.

query() , limitQuery() , prepareQuery() , executeQuery() , fetchRow() , fetchOne() , fetchAll()

Пред.	Начало	След.
MDB_Common::fetchAll()	Уровень выше	MDB_Common::fetchOne()