(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.
  
statementThe 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().
      
   Returns true on success or false on failure.
  
Note:
Handling of
LONGVARBINARYcolumns is also affected by odbc_binmode().