You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
682 lines
19 KiB
PHP
682 lines
19 KiB
PHP
<?php
|
|
|
|
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
|
|
|
|
/**
|
|
* The PEAR DB driver for PHP's ifx extension
|
|
* for interacting with Informix databases
|
|
*
|
|
* PHP versions 4 and 5
|
|
*
|
|
* LICENSE: This source file is subject to version 3.0 of the PHP license
|
|
* that is available through the world-wide-web at the following URI:
|
|
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
|
|
* the PHP License and are unable to obtain it through the web, please
|
|
* send a note to license@php.net so we can mail you a copy immediately.
|
|
*
|
|
* @category Database
|
|
* @package DB
|
|
* @author Tomas V.V.Cox <cox@idecnet.com>
|
|
* @author Daniel Convissor <danielc@php.net>
|
|
* @copyright 1997-2005 The PHP Group
|
|
* @license http://www.php.net/license/3_0.txt PHP License 3.0
|
|
* @version CVS: $Id$
|
|
* @link http://pear.php.net/package/DB
|
|
*/
|
|
|
|
/**
|
|
* Obtain the DB_common class so it can be extended from
|
|
*/
|
|
require_once 'DB/common.php';
|
|
|
|
/**
|
|
* The methods PEAR DB uses to interact with PHP's ifx extension
|
|
* for interacting with Informix databases
|
|
*
|
|
* These methods overload the ones declared in DB_common.
|
|
*
|
|
* More info on Informix errors can be found at:
|
|
* http://www.informix.com/answers/english/ierrors.htm
|
|
*
|
|
* TODO:
|
|
* - set needed env Informix vars on connect
|
|
* - implement native prepare/execute
|
|
*
|
|
* @category Database
|
|
* @package DB
|
|
* @author Tomas V.V.Cox <cox@idecnet.com>
|
|
* @author Daniel Convissor <danielc@php.net>
|
|
* @copyright 1997-2005 The PHP Group
|
|
* @license http://www.php.net/license/3_0.txt PHP License 3.0
|
|
* @version Release: @package_version@
|
|
* @link http://pear.php.net/package/DB
|
|
*/
|
|
class DB_ifx extends DB_common
|
|
{
|
|
// {{{ properties
|
|
|
|
/**
|
|
* The DB driver type (mysql, oci8, odbc, etc.)
|
|
* @var string
|
|
*/
|
|
var $phptype = 'ifx';
|
|
|
|
/**
|
|
* The database syntax variant to be used (db2, access, etc.), if any
|
|
* @var string
|
|
*/
|
|
var $dbsyntax = 'ifx';
|
|
|
|
/**
|
|
* The capabilities of this DB implementation
|
|
*
|
|
* The 'new_link' element contains the PHP version that first provided
|
|
* new_link support for this DBMS. Contains false if it's unsupported.
|
|
*
|
|
* Meaning of the 'limit' element:
|
|
* + 'emulate' = emulate with fetch row by number
|
|
* + 'alter' = alter the query
|
|
* + false = skip rows
|
|
*
|
|
* @var array
|
|
*/
|
|
var $features = array(
|
|
'limit' => 'emulate',
|
|
'new_link' => false,
|
|
'numrows' => 'emulate',
|
|
'pconnect' => true,
|
|
'prepare' => false,
|
|
'ssl' => false,
|
|
'transactions' => true,
|
|
);
|
|
|
|
/**
|
|
* A mapping of native error codes to DB error codes
|
|
* @var array
|
|
*/
|
|
var $errorcode_map = array(
|
|
'-201' => DB_ERROR_SYNTAX,
|
|
'-206' => DB_ERROR_NOSUCHTABLE,
|
|
'-217' => DB_ERROR_NOSUCHFIELD,
|
|
'-236' => DB_ERROR_VALUE_COUNT_ON_ROW,
|
|
'-239' => DB_ERROR_CONSTRAINT,
|
|
'-253' => DB_ERROR_SYNTAX,
|
|
'-292' => DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'-310' => DB_ERROR_ALREADY_EXISTS,
|
|
'-316' => DB_ERROR_ALREADY_EXISTS,
|
|
'-319' => DB_ERROR_NOT_FOUND,
|
|
'-329' => DB_ERROR_NODBSELECTED,
|
|
'-346' => DB_ERROR_CONSTRAINT,
|
|
'-386' => DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'-391' => DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'-554' => DB_ERROR_SYNTAX,
|
|
'-691' => DB_ERROR_CONSTRAINT,
|
|
'-692' => DB_ERROR_CONSTRAINT,
|
|
'-703' => DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'-1204' => DB_ERROR_INVALID_DATE,
|
|
'-1205' => DB_ERROR_INVALID_DATE,
|
|
'-1206' => DB_ERROR_INVALID_DATE,
|
|
'-1209' => DB_ERROR_INVALID_DATE,
|
|
'-1210' => DB_ERROR_INVALID_DATE,
|
|
'-1212' => DB_ERROR_INVALID_DATE,
|
|
'-1213' => DB_ERROR_INVALID_NUMBER,
|
|
);
|
|
|
|
/**
|
|
* The raw database connection created by PHP
|
|
* @var resource
|
|
*/
|
|
var $connection;
|
|
|
|
/**
|
|
* The DSN information for connecting to a database
|
|
* @var array
|
|
*/
|
|
var $dsn = array();
|
|
|
|
|
|
/**
|
|
* Should data manipulation queries be committed automatically?
|
|
* @var bool
|
|
* @access private
|
|
*/
|
|
var $autocommit = true;
|
|
|
|
/**
|
|
* The quantity of transactions begun
|
|
*
|
|
* {@internal While this is private, it can't actually be designated
|
|
* private in PHP 5 because it is directly accessed in the test suite.}}
|
|
*
|
|
* @var integer
|
|
* @access private
|
|
*/
|
|
var $transaction_opcount = 0;
|
|
|
|
/**
|
|
* The number of rows affected by a data manipulation query
|
|
* @var integer
|
|
* @access private
|
|
*/
|
|
var $affected = 0;
|
|
|
|
|
|
// }}}
|
|
// {{{ constructor
|
|
|
|
/**
|
|
* This constructor calls <kbd>$this->DB_common()</kbd>
|
|
*
|
|
* @return void
|
|
*/
|
|
function DB_ifx()
|
|
{
|
|
$this->DB_common();
|
|
}
|
|
|
|
// }}}
|
|
// {{{ connect()
|
|
|
|
/**
|
|
* Connect to the database server, log in and open the database
|
|
*
|
|
* Don't call this method directly. Use DB::connect() instead.
|
|
*
|
|
* @param array $dsn the data source name
|
|
* @param bool $persistent should the connection be persistent?
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*/
|
|
function connect($dsn, $persistent = false)
|
|
{
|
|
if (!PEAR::loadExtension('informix') &&
|
|
!PEAR::loadExtension('Informix'))
|
|
{
|
|
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
|
|
}
|
|
|
|
$this->dsn = $dsn;
|
|
if ($dsn['dbsyntax']) {
|
|
$this->dbsyntax = $dsn['dbsyntax'];
|
|
}
|
|
|
|
$dbhost = $dsn['hostspec'] ? '@' . $dsn['hostspec'] : '';
|
|
$dbname = $dsn['database'] ? $dsn['database'] . $dbhost : '';
|
|
$user = $dsn['username'] ? $dsn['username'] : '';
|
|
$pw = $dsn['password'] ? $dsn['password'] : '';
|
|
|
|
$connect_function = $persistent ? 'ifx_pconnect' : 'ifx_connect';
|
|
|
|
$this->connection = @$connect_function($dbname, $user, $pw);
|
|
if (!is_resource($this->connection)) {
|
|
return $this->ifxRaiseError(DB_ERROR_CONNECT_FAILED);
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ disconnect()
|
|
|
|
/**
|
|
* Disconnects from the database server
|
|
*
|
|
* @return bool TRUE on success, FALSE on failure
|
|
*/
|
|
function disconnect()
|
|
{
|
|
$ret = @ifx_close($this->connection);
|
|
$this->connection = null;
|
|
return $ret;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ simpleQuery()
|
|
|
|
/**
|
|
* Sends a query to the database server
|
|
*
|
|
* @param string the SQL query string
|
|
*
|
|
* @return mixed + a PHP result resrouce for successful SELECT queries
|
|
* + the DB_OK constant for other successful queries
|
|
* + a DB_Error object on failure
|
|
*/
|
|
function simpleQuery($query)
|
|
{
|
|
$ismanip = DB::isManip($query);
|
|
$this->last_query = $query;
|
|
$this->affected = null;
|
|
if (preg_match('/(SELECT)/i', $query)) { //TESTME: Use !DB::isManip()?
|
|
// the scroll is needed for fetching absolute row numbers
|
|
// in a select query result
|
|
$result = @ifx_query($query, $this->connection, IFX_SCROLL);
|
|
} else {
|
|
if (!$this->autocommit && $ismanip) {
|
|
if ($this->transaction_opcount == 0) {
|
|
$result = @ifx_query('BEGIN WORK', $this->connection);
|
|
if (!$result) {
|
|
return $this->ifxRaiseError();
|
|
}
|
|
}
|
|
$this->transaction_opcount++;
|
|
}
|
|
$result = @ifx_query($query, $this->connection);
|
|
}
|
|
if (!$result) {
|
|
return $this->ifxRaiseError();
|
|
}
|
|
$this->affected = @ifx_affected_rows($result);
|
|
// Determine which queries should return data, and which
|
|
// should return an error code only.
|
|
if (preg_match('/(SELECT)/i', $query)) {
|
|
return $result;
|
|
}
|
|
// XXX Testme: free results inside a transaction
|
|
// may cause to stop it and commit the work?
|
|
|
|
// Result has to be freed even with a insert or update
|
|
@ifx_free_result($result);
|
|
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ nextResult()
|
|
|
|
/**
|
|
* Move the internal ifx result pointer to the next available result
|
|
*
|
|
* @param a valid fbsql result resource
|
|
*
|
|
* @access public
|
|
*
|
|
* @return true if a result is available otherwise return false
|
|
*/
|
|
function nextResult($result)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ affectedRows()
|
|
|
|
/**
|
|
* Determines the number of rows affected by a data maniuplation query
|
|
*
|
|
* 0 is returned for queries that don't manipulate data.
|
|
*
|
|
* @return int the number of rows. A DB_Error object on failure.
|
|
*/
|
|
function affectedRows()
|
|
{
|
|
if (DB::isManip($this->last_query)) {
|
|
return $this->affected;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ fetchInto()
|
|
|
|
/**
|
|
* Places a row from the result set into the given array
|
|
*
|
|
* Formating of the array and the data therein are configurable.
|
|
* See DB_result::fetchInto() for more information.
|
|
*
|
|
* This method is not meant to be called directly. Use
|
|
* DB_result::fetchInto() instead. It can't be declared "protected"
|
|
* because DB_result is a separate object.
|
|
*
|
|
* @param resource $result the query result resource
|
|
* @param array $arr the referenced array to put the data in
|
|
* @param int $fetchmode how the resulting array should be indexed
|
|
* @param int $rownum the row number to fetch (0 = first row)
|
|
*
|
|
* @return mixed DB_OK on success, NULL when the end of a result set is
|
|
* reached or on failure
|
|
*
|
|
* @see DB_result::fetchInto()
|
|
*/
|
|
function fetchInto($result, &$arr, $fetchmode, $rownum = null)
|
|
{
|
|
if (($rownum !== null) && ($rownum < 0)) {
|
|
return null;
|
|
}
|
|
if ($rownum === null) {
|
|
/*
|
|
* Even though fetch_row() should return the next row if
|
|
* $rownum is null, it doesn't in all cases. Bug 598.
|
|
*/
|
|
$rownum = 'NEXT';
|
|
} else {
|
|
// Index starts at row 1, unlike most DBMS's starting at 0.
|
|
$rownum++;
|
|
}
|
|
if (!$arr = @ifx_fetch_row($result, $rownum)) {
|
|
return null;
|
|
}
|
|
if ($fetchmode !== DB_FETCHMODE_ASSOC) {
|
|
$i=0;
|
|
$order = array();
|
|
foreach ($arr as $val) {
|
|
$order[$i++] = $val;
|
|
}
|
|
$arr = $order;
|
|
} elseif ($fetchmode == DB_FETCHMODE_ASSOC &&
|
|
$this->options['portability'] & DB_PORTABILITY_LOWERCASE)
|
|
{
|
|
$arr = array_change_key_case($arr, CASE_LOWER);
|
|
}
|
|
if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
|
|
$this->_rtrimArrayValues($arr);
|
|
}
|
|
if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
|
|
$this->_convertNullArrayValuesToEmpty($arr);
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ numCols()
|
|
|
|
/**
|
|
* Gets the number of columns in a result set
|
|
*
|
|
* This method is not meant to be called directly. Use
|
|
* DB_result::numCols() instead. It can't be declared "protected"
|
|
* because DB_result is a separate object.
|
|
*
|
|
* @param resource $result PHP's query result resource
|
|
*
|
|
* @return int the number of columns. A DB_Error object on failure.
|
|
*
|
|
* @see DB_result::numCols()
|
|
*/
|
|
function numCols($result)
|
|
{
|
|
if (!$cols = @ifx_num_fields($result)) {
|
|
return $this->ifxRaiseError();
|
|
}
|
|
return $cols;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ freeResult()
|
|
|
|
/**
|
|
* Deletes the result set and frees the memory occupied by the result set
|
|
*
|
|
* This method is not meant to be called directly. Use
|
|
* DB_result::free() instead. It can't be declared "protected"
|
|
* because DB_result is a separate object.
|
|
*
|
|
* @param resource $result PHP's query result resource
|
|
*
|
|
* @return bool TRUE on success, FALSE if $result is invalid
|
|
*
|
|
* @see DB_result::free()
|
|
*/
|
|
function freeResult($result)
|
|
{
|
|
return @ifx_free_result($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ autoCommit()
|
|
|
|
/**
|
|
* Enables or disables automatic commits
|
|
*
|
|
* @param bool $onoff true turns it on, false turns it off
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object if the driver
|
|
* doesn't support auto-committing transactions.
|
|
*/
|
|
function autoCommit($onoff = true)
|
|
{
|
|
// XXX if $this->transaction_opcount > 0, we should probably
|
|
// issue a warning here.
|
|
$this->autocommit = $onoff ? true : false;
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ commit()
|
|
|
|
/**
|
|
* Commits the current transaction
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*/
|
|
function commit()
|
|
{
|
|
if ($this->transaction_opcount > 0) {
|
|
$result = @ifx_query('COMMIT WORK', $this->connection);
|
|
$this->transaction_opcount = 0;
|
|
if (!$result) {
|
|
return $this->ifxRaiseError();
|
|
}
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ rollback()
|
|
|
|
/**
|
|
* Reverts the current transaction
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*/
|
|
function rollback()
|
|
{
|
|
if ($this->transaction_opcount > 0) {
|
|
$result = @ifx_query('ROLLBACK WORK', $this->connection);
|
|
$this->transaction_opcount = 0;
|
|
if (!$result) {
|
|
return $this->ifxRaiseError();
|
|
}
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ ifxRaiseError()
|
|
|
|
/**
|
|
* Produces a DB_Error object regarding the current problem
|
|
*
|
|
* @param int $errno if the error is being manually raised pass a
|
|
* DB_ERROR* constant here. If this isn't passed
|
|
* the error information gathered from the DBMS.
|
|
*
|
|
* @return object the DB_Error object
|
|
*
|
|
* @see DB_common::raiseError(),
|
|
* DB_ifx::errorNative(), DB_ifx::errorCode()
|
|
*/
|
|
function ifxRaiseError($errno = null)
|
|
{
|
|
if ($errno === null) {
|
|
$errno = $this->errorCode(ifx_error());
|
|
}
|
|
return $this->raiseError($errno, null, null, null,
|
|
$this->errorNative());
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorNative()
|
|
|
|
/**
|
|
* Gets the DBMS' native error code and message produced by the last query
|
|
*
|
|
* @return string the DBMS' error code and message
|
|
*/
|
|
function errorNative()
|
|
{
|
|
return @ifx_error() . ' ' . @ifx_errormsg();
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorCode()
|
|
|
|
/**
|
|
* Maps native error codes to DB's portable ones.
|
|
*
|
|
* Requires that the DB implementation's constructor fills
|
|
* in the <var>$errorcode_map</var> property.
|
|
*
|
|
* @param string $nativecode error code returned by the database
|
|
* @return int a portable DB error code, or DB_ERROR if this DB
|
|
* implementation has no mapping for the given error code.
|
|
*/
|
|
function errorCode($nativecode)
|
|
{
|
|
if (ereg('SQLCODE=(.*)]', $nativecode, $match)) {
|
|
$code = $match[1];
|
|
if (isset($this->errorcode_map[$code])) {
|
|
return $this->errorcode_map[$code];
|
|
}
|
|
}
|
|
return DB_ERROR;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ tableInfo()
|
|
|
|
/**
|
|
* Returns information about a table or a result set
|
|
*
|
|
* NOTE: only supports 'table' if <var>$result</var> is a table name.
|
|
*
|
|
* If analyzing a query result and the result has duplicate field names,
|
|
* an error will be raised saying
|
|
* <samp>can't distinguish duplicate field names</samp>.
|
|
*
|
|
* @param object|string $result DB_result object from a query or a
|
|
* string containing the name of a table.
|
|
* While this also accepts a query result
|
|
* resource identifier, this behavior is
|
|
* deprecated.
|
|
* @param int $mode a valid tableInfo mode
|
|
*
|
|
* @return array an associative array with the information requested.
|
|
* A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::tableInfo()
|
|
* @since Method available since Release 1.6.0
|
|
*/
|
|
function tableInfo($result, $mode = null)
|
|
{
|
|
if (is_string($result)) {
|
|
/*
|
|
* Probably received a table name.
|
|
* Create a result resource identifier.
|
|
*/
|
|
$id = @ifx_query("SELECT * FROM $result WHERE 1=0",
|
|
$this->connection);
|
|
$got_string = true;
|
|
} elseif (isset($result->result)) {
|
|
/*
|
|
* Probably received a result object.
|
|
* Extract the result resource identifier.
|
|
*/
|
|
$id = $result->result;
|
|
$got_string = false;
|
|
} else {
|
|
/*
|
|
* Probably received a result resource identifier.
|
|
* Copy it.
|
|
*/
|
|
$id = $result;
|
|
$got_string = false;
|
|
}
|
|
|
|
if (!is_resource($id)) {
|
|
return $this->ifxRaiseError(DB_ERROR_NEED_MORE_DATA);
|
|
}
|
|
|
|
$flds = @ifx_fieldproperties($id);
|
|
$count = @ifx_num_fields($id);
|
|
|
|
if (count($flds) != $count) {
|
|
return $this->raiseError("can't distinguish duplicate field names");
|
|
}
|
|
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$i = 0;
|
|
$res = array();
|
|
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
foreach ($flds as $key => $value) {
|
|
$props = explode(';', $value);
|
|
$res[$i] = array(
|
|
'table' => $got_string ? $case_func($result) : '',
|
|
'name' => $case_func($key),
|
|
'type' => $props[0],
|
|
'len' => $props[1],
|
|
'flags' => $props[4] == 'N' ? 'not_null' : '',
|
|
);
|
|
if ($mode & DB_TABLEINFO_ORDER) {
|
|
$res['order'][$res[$i]['name']] = $i;
|
|
}
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) {
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
|
}
|
|
$i++;
|
|
}
|
|
|
|
// free the result only if we were called on a table
|
|
if ($got_string) {
|
|
@ifx_free_result($id);
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getSpecialQuery()
|
|
|
|
/**
|
|
* Obtains the query string needed for listing a given type of objects
|
|
*
|
|
* @param string $type the kind of objects you want to retrieve
|
|
*
|
|
* @return string the SQL query string or null if the driver doesn't
|
|
* support the object type requested
|
|
*
|
|
* @access protected
|
|
* @see DB_common::getListOf()
|
|
*/
|
|
function getSpecialQuery($type)
|
|
{
|
|
switch ($type) {
|
|
case 'tables':
|
|
return 'SELECT tabname FROM systables WHERE tabid >= 100';
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|
|
|
|
?>
|