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.
本 » PECL 扩展未绑定于 PHP 中。 安装此 PECL 扩展库的信息可在手册中标题为 PECL 扩展库安装的一章中找到。 更多信息如新版本，下载，源文件，维护者信息以及更新日志等可以在这里找到： » 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.
这些函数的行为受 php.ini 的影响。
| 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.
以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。
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);
?>