XLV. Ingres II functions
Introduction
These functions allow you to access Ingres II database servers.
Note: If you already used PHP extensions to access other database servers, note that Ingres doesn't allow concurrent queries and/or transaction over one connection, thus you won't find any result or transaction handle in this extension. The result of a query must be treated before sending another query, and a transaction must be commited or rolled back before opening another transaction (which is automaticaly done when sending the first query).
| Warning |
This extension is EXPERIMENTAL. The behaviour of this extension -- including the names of its functions and anything else documented about this extension -- may change without notice in a future release of PHP. Use this extension at your own risk. |
Requirements
To compile PHP with Ingres support, you need the Open API library and header files included with Ingres II.
Installation
In order to have these functions available, you must compile PHP with Ingres support by using the --with-ingres[=DIR] option, where DIR is the Ingres base directory, which defaults to /II/ingres. If the II_SYSTEM environment variable isn't correctly set you may have to use --with-ingres=DIR to specify your Ingres installation directory.
When using this extension with Apache, if Apache does not start and complains with "PHP Fatal error: Unable to start ingres_ii module in Unknown on line 0" then make sure the environement variable II_SYSTEM is correctly set. Adding "export II_SYSTEM="/home/ingres/II" in the script that starts Apache, just before launching httpd, should be fine.
Runtime Configuration
The behaviour of these functions is affected by settings in php.ini.
Table 1. Ingres II configuration options
| Name | Default | Changeable |
|---|---|---|
| ingres.allow_persistent | "1" | PHP_INI_SYSTEM |
| ingres.max_persistent | "-1" | PHP_INI_SYSTEM |
| ingres.max_links | "-1" | PHP_INI_SYSTEM |
| ingres.default_database | NULL | PHP_INI_ALL |
| ingres.default_user | NULL | PHP_INI_ALL |
| ingres.default_password | NULL | PHP_INI_ALL |
- Table of Contents
- ingres_autocommit -- Switch autocommit on or off
- ingres_close -- Close an Ingres II database connection
- ingres_commit -- Commit a transaction
- ingres_connect -- Open a connection to an Ingres II database
- ingres_fetch_array -- Fetch a row of result into an array
- ingres_fetch_object -- Fetch a row of result into an object.
- ingres_fetch_row -- Fetch a row of result into an enumerated array
- ingres_field_length -- Get the length of a field
- ingres_field_name -- Get the name of a field in a query result.
- ingres_field_nullable -- Test if a field is nullable
- ingres_field_precision -- Get the precision of a field
- ingres_field_scale -- Get the scale of a field
- ingres_field_type -- Get the type of a field in a query result
- ingres_num_fields -- Get the number of fields returned by the last query
- ingres_num_rows -- Get the number of rows affected or returned by the last query
- ingres_pconnect -- Open a persistent connection to an Ingres II database
- ingres_query -- Send a SQL query to Ingres II
- ingres_rollback -- Roll back a transaction