DB_common::getCol()

DB_common::getCol() -- Runs a query and returns the data from a single column

Synopsis

Описание

Runs the query provided and puts the first column of data into an array then frees the result set.

Параметр

string $query

the SQL query or the statement to prepare

mixed $col

which column to return (integer [column number, starting at 0] or string [column name])

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.

If supplied, prepare()/ execute() is used.

Возвращаемое значение

array - an ordered array containing data from a result set column or a DB_Error object on failure. The array's index starts at 0.

Throws

Заметка

Эта функция не должна вызываться статически.

Пример

См. также

getOne(), getRow(), getAssoc(), getAll(), query(), "Intro - Prepare & Execute"

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