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 committed or rolled back before opening another transaction (which is automatically done when sending the first query).
To compile PHP with Ingres support, you need the Ingres OpenAPI library and header files.
This » PECL extension is not bundled with PHP. Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: » http://pecl.php.net/package/ingres.
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 environment 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.
The behaviour of these functions is affected by settings in php.ini.
| Name | Default | Changeable | Changelog |
|---|---|---|---|
| ingres.allow_persistent | "1" | PHP_INI_SYSTEM | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.max_persistent | "-1" | PHP_INI_SYSTEM | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.max_links | "-1" | PHP_INI_SYSTEM | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.default_database | NULL | PHP_INI_ALL | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.default_user | NULL | PHP_INI_ALL | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.default_password | NULL | PHP_INI_ALL | Available since PHP 4.0.2. Removed in PHP 5.1.0. |
| ingres.report_db_warnings | "1" | PHP_INI_ALL | Available since ingres 1.1. |
| ingres.cursor_mode | "0" | PHP_INI_ALL | Available since ingres 1.1. |
| ingres.blob_segment_length | "4096" | PHP_INI_ALL | Available since ingres 1.2.0. |
| ingres.trace_connect | "0" | PHP_INI_ALL | Available since ingres 1.2.1. |
| ingres.timeout | "-1" | PHP_INI_ALL | Available since ingres 1.4.0. |
| ingres.array_index_start | "1" | PHP_INI_ALL | Available since ingres 1.4.0. |
ingres_connect() and ingres_pconnect() return an Ingres II link identifier.
The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
This simple example shows how to connect, execute a query, print resulting rows and disconnect from an Ingres database.
Example#1 Simple Ingres Example
<?php
// Connecting, selecting database
$link = ingres_connect('database', 'user', 'password')
or die('Could not connect: ' . ingres_error($link));
echo 'Connected successfully';
// Select from a table that exists in all Ingres databases
$query = 'SELECT * FROM iirelation';
$returncode = ingres_query($query,$link) or die('Query failed: ' .
ingres_error($link));
// Print results in HTML
// relid - table name
// relowner - table owner
echo "<table>\n";
while ($iirelation = ingres_fetch_object(INGRES_BOTH, $link)) {
echo "\t<tr>\n";
echo "\t\t<td>" . $iirelation->relid . "</td>\n";
echo "\t\t<td>" . $iirelation->relowner . "</td>\n";
echo "\t</tr>\n";
}
echo "</table>\n";
// Commit transaction
ingres_commit($link);
// Closing connection
ingres_close($link);
?>