(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Test if a field is nullable

(PECL ingres >= 2.0.0) Get the next Ingres error

(PECL ingres >= 1.1.0) Get the last Ingres error number generated

(PECL ingres >= 2.1.0) Returns the installation character set

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Get the precision of a field

(PECL ingres >= 2.1.0) Set the row position before fetching data

(PECL ingres >= 1.1.0) Get the last SQLSTATE error code generated

(No version information available, might only be in Git) Send an unbuffered SQL query to Ingres

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Open a persistent connection to an Ingres database

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Fetch a row of result into an object