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(PHP 4, PHP 5, PHP 7, PHP 8)
odbc_longreadlen — Handling of LONG columns
$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.
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().
成功时返回 true， 或者在失败时返回 false。
注意:
Handling of
LONGVARBINARYcolumns is also affected by odbc_binmode().
