odbc_longreadlen

(PHP 4, PHP 5, PHP 7, PHP 8)

odbc_longreadlen — Handling of LONG columns

odbc_longreadlen(resource $statement, int $length): true

Controls handling of LONG, LONGVARCHAR and LONGVARBINARY columns. The default length can be set using the uodbc.defaultlrl php.ini directive.

statement: The result identifier.
length: The number of bytes returned to PHP is controlled by the parameter length. If it is set to 0, long column data is passed through to the client (i.e. printed) when retrieved with odbc_result().

总是返回 true。

注意:
Handling of LONGVARBINARY columns is also affected by odbc_binmode().