(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SQLite3Result::columnName — Returns the name of the nth column
Returns the name of the column specified by the column. Note that the name of a result column is the value of the AS clause for that column, if there is an AS clause. If there is no AS clause then the name of the column is unspecified and may change from one release of libsqlite3 to the next.
columnThe numeric zero-based index of the column.