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LXVII. Ingres II Functions

Введение

These functions allow you to access Ingres II database servers.

Замечание: 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).

Требования

To compile PHP with Ingres support, you need the Ingres OpenAPI library and header files.

Установка

Это расширение PECL не поставляется вместе с PHP. Дополнительная информация, такая как новый версии, скачивание, исходные файлы, информация о разработчике и CHANGELOG, могут быть найдены здесь: 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.

Настройка во время выполнения

Поведение этих функций зависит от установок в php.ini.

Таблица 1. Ingres configuration options

NameDefaultChangeableChangelog
ingres.allow_persistent"1"PHP_INI_SYSTEMAvailable since PHP 4.0.2.
ingres.max_persistent"-1"PHP_INI_SYSTEMAvailable since PHP 4.0.2.
ingres.max_links"-1"PHP_INI_SYSTEMAvailable since PHP 4.0.2.
ingres.default_databaseNULLPHP_INI_ALLAvailable since PHP 4.0.2.
ingres.default_userNULLPHP_INI_ALLAvailable since PHP 4.0.2.
ingres.default_passwordNULLPHP_INI_ALLAvailable since PHP 4.0.2.
ingres.report_db_warnings"1"PHP_INI_ALLAvailable since version 1.1.0 of the PECL extension.
ingres.cursor_mode"0"PHP_INI_ALLAvailable since version 1.1.0 of the PECL extension.
ingres.blob_segment_length"4096"PHP_INI_ALLAvailable since version 1.2.0 of the PECL extension.
ingres.trace_connect"0"PHP_INI_ALLAvailable since version 1.3.1 of the PECL extension.
ingres.timeout"-1"PHP_INI_ALLAvailable since version 1.3.1 of the PECL extension.
ingres.array_index_start"1"PHP_INI_ALLAvailable since version 1.3.1 of the PECL extension.
Для подробного описания констант PHP_INI_*, обратитесь к документации функции ini_set().

Типы ресурсов

Данное расширение не определяет никакие типы ресурсов.

Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение подгружается во время выполнения.

INGRES_ASSOC (integer)

Columns are returned into the array having the fieldname as the array index.

INGRES_NUM (integer)

Columns are returned into the array having a numerical index to the fields. This index starts with 1, the first field in the result.

INGRES_BOTH (integer)

Columns are returned into the array having both a numerical index and the fieldname as the array index.

INGRES_EXT_VERSION (string)

Specifies the version of the Ingres Extension. Available since version 1.2.0 of the PECL extension.

INGRES_API_VERSION (integer)

Specifies the version of Ingres OpenAPI the extension was built against. Available since version 1.2.0 of the PECL extension.

INGRES_CURSOR_READONLY (integer)

Specifies that Ingres cursors should be opened in 'readonly' mode. Available since version 1.2.0 of the PECL extension.

INGRES_CURSOR_UPDATE (integer)

Specifies that Ingres cursors should be opened 'for update'. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_MULTINATIONAL (integer)

Equivalent to the II_DATE_FORMAT setting of MULTINATIONAL. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_MULTINATIONAL4 (integer)

Equivalent to the II_DATE_FORMAT setting of MULTINATIONAL4. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_FINNISH (integer)

Equivalent to the II_DATE_FORMAT setting of FINNISH. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_ISO (integer)

Equivalent to the II_DATE_FORMAT setting of ISO. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_ISO4 (integer)

Equivalent to the II_DATE_FORMAT setting of ISO4. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_GERMAN (integer)

Equivalent to the II_DATE_FORMAT setting of GERMAN. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_MDY (integer)

Equivalent to the II_DATE_FORMAT setting of MDY. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_DMY (integer)

Equivalent to the II_DATE_FORMAT setting of DMY. Available since version 1.2.0 of the PECL extension.

INGRES_DATE_YMD (integer)

Equivalent to the II_DATE_FORMAT setting of YMD. Available since version 1.2.0 of the PECL extension.

INGRES_MONEY_LEADING (integer)

Specifies the currency character that should be placed at the start of a money value. Equivalent to setting II_MONEY_FORMAT to 'L:'. Available since version 1.2.0 of the PECL extension.

INGRES_MONEY_TRAILING (integer)

Specifies the currency character that should be placed at the end of a money value. Equivalent to setting II_MONEY_FORMAT to 'T:'. Available since version 1.2.0 of the PECL extension.

INGRES_STRUCTURE_BTREE (integer)

Specifies the default table or index structure to BTREE when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_CBTREE (integer)

Specifies the default table or index structure to COMPRESSED BTREE when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_HASH (integer)

Specifies the default table or index structure to HASH when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_CHASH (integer)

Specifies the default table or index structure to COMPRESSED HASH when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_HEAP (integer)

Specifies the default table structure to HEAP when used in combination with the table_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_CHEAP (integer)

Specifies the default table structure to COMPRESSED HEAP when used in combination with the table_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_ISAM (integer)

Specifies the default table or index structure to ISAM when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

INGRES_STRUCTURE_CISAM (integer)

Specifies the default table or index structure to COMPRESSED ISAM when used in combination with the table_structure or index_structure option when connecting. Available since version 1.4.0 of the PECL extension.

Примеры

This simple example shows how to connect, execute a query, print resulting rows and disconnect from an Ingres database.

Пример 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 ($iirelation = ingres_fetch_object($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);
?>

Содержание
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 database
ingres_cursor -- Gets a cursor name for a given link resource
ingres_errno -- Gets the last ingres error number generated
ingres_error -- Gets a meaningful error message for the last error generated
ingres_errsqlstate -- Gets the last SQLSTATE error code generated
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


ingres_autocommit> <PDO_INFORMIX DSN
Last updated: Sat, 27 Jan 2007
 
add a note add a note User Contributed Notes
Ingres II Functions
corysbrain-ondrugs at yahoo dot com
07-Jul-2007 09:04
My post below works but is *not* the correct way.  It only works because of default behavior.   I'll re-post my understanding of what is "correct" soon.
corysbrain-ondrugs at yahoo dot com
13-Feb-2007 06:57
On the three versions of Linux/Ingres I've worked on, I've always had to modify the following line in the example above:

while ($iirelation = ingres_fetch_object($link)) {

to:

while ($iirelation = ingres_fetch_object()) {

If not, PHP will return "Undefined property" notices. 

However,  it's my understanding that the following is the proper way to access the database (it works as expected):

<?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';
$rs = ingres_query($query,$link) or die('Query failed: ' .
ingres_error($link));

// Print results in HTML
// relid - table name
// relowner - table owner
echo "<table>\n";
while ($iirelation = ingres_fetch_object($rs)) {
   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);
?>
mail at hannes-reinecke dot de
12-Dec-2002 03:09
If you try to use the 'Embedded Ingres' as it is delivered with certain CA products (e.g. TNG UHD), the referenced library '-lingres' is not available. You need to add '-lq -lframe' instead.
burckhardtNOSPAM at SNIPITOFFgsf dot de
23-Jan-2002 10:07
Hi,
I am currently migrating from MySQL to Ingres. Generally, almost ALL INGRES-functions that use arrays start with counter=1, NOT counter=0. Also, whereas MySQL-functions use $result as an argument, INGRES-functions use $connection instead.
Florian
add a note add a note

ingres_autocommit> <PDO_INFORMIX DSN
Last updated: Sat, 27 Jan 2007
 
 
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