odbc_longreadlen

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

odbc_longreadlen — Handling of LONG columns

说明

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

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

参数

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().

返回值

成功时返回 true， 或者在失败时返回 false。

注释

注意:

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