368 lines
9.1 KiB
PHP
368 lines
9.1 KiB
PHP
<?php
|
|
/*
|
|
V5.06 16 Oct 2008 (c) 2000-2008 John Lim (jlim#natsoft.com). All rights reserved.
|
|
Released under both BSD license and Lesser GPL library license.
|
|
Whenever there is any discrepancy between the two licenses,
|
|
the BSD license will take precedence.
|
|
Set tabs to 4 for best viewing.
|
|
|
|
Latest version is available at http://adodb.sourceforge.net
|
|
|
|
DB2 data driver. Requires ODBC.
|
|
|
|
From phpdb list:
|
|
|
|
Hi Andrew,
|
|
|
|
thanks a lot for your help. Today we discovered what
|
|
our real problem was:
|
|
|
|
After "playing" a little bit with the php-scripts that try
|
|
to connect to the IBM DB2, we set the optional parameter
|
|
Cursortype when calling odbc_pconnect(....).
|
|
|
|
And the exciting thing: When we set the cursor type
|
|
to SQL_CUR_USE_ODBC Cursor Type, then
|
|
the whole query speed up from 1 till 10 seconds
|
|
to 0.2 till 0.3 seconds for 100 records. Amazing!!!
|
|
|
|
Therfore, PHP is just almost fast as calling the DB2
|
|
from Servlets using JDBC (don't take too much care
|
|
about the speed at whole: the database was on a
|
|
completely other location, so the whole connection
|
|
was made over a slow network connection).
|
|
|
|
I hope this helps when other encounter the same
|
|
problem when trying to connect to DB2 from
|
|
PHP.
|
|
|
|
Kind regards,
|
|
Christian Szardenings
|
|
|
|
2 Oct 2001
|
|
Mark Newnham has discovered that the SQL_CUR_USE_ODBC is not supported by
|
|
IBM's DB2 ODBC driver, so this must be a 3rd party ODBC driver.
|
|
|
|
From the IBM CLI Reference:
|
|
|
|
SQL_ATTR_ODBC_CURSORS (DB2 CLI v5)
|
|
This connection attribute is defined by ODBC, but is not supported by DB2
|
|
CLI. Any attempt to set or get this attribute will result in an SQLSTATE of
|
|
HYC00 (Driver not capable).
|
|
|
|
A 32-bit option specifying how the Driver Manager uses the ODBC cursor
|
|
library.
|
|
|
|
So I guess this means the message [above] was related to using a 3rd party
|
|
odbc driver.
|
|
|
|
Setting SQL_CUR_USE_ODBC
|
|
========================
|
|
To set SQL_CUR_USE_ODBC for drivers that require it, do this:
|
|
|
|
$db = NewADOConnection('odbc_db2');
|
|
$db->curMode = SQL_CUR_USE_ODBC;
|
|
$db->Connect($dsn, $userid, $pwd);
|
|
|
|
|
|
|
|
USING CLI INTERFACE
|
|
===================
|
|
|
|
I have had reports that the $host and $database params have to be reversed in
|
|
Connect() when using the CLI interface. From Halmai Csongor csongor.halmai#nexum.hu:
|
|
|
|
> The symptom is that if I change the database engine from postgres or any other to DB2 then the following
|
|
> connection command becomes wrong despite being described this version to be correct in the docs.
|
|
>
|
|
> $connection_object->Connect( $DATABASE_HOST, $DATABASE_AUTH_USER_NAME, $DATABASE_AUTH_PASSWORD, $DATABASE_NAME )
|
|
>
|
|
> In case of DB2 I had to swap the first and last arguments in order to connect properly.
|
|
|
|
|
|
System Error 5
|
|
==============
|
|
IF you get a System Error 5 when trying to Connect/Load, it could be a permission problem. Give the user connecting
|
|
to DB2 full rights to the DB2 SQLLIB directory, and place the user in the DBUSERS group.
|
|
*/
|
|
|
|
// security - hide paths
|
|
if (!defined('ADODB_DIR')) die();
|
|
|
|
if (!defined('_ADODB_ODBC_LAYER')) {
|
|
include(ADODB_DIR."/drivers/adodb-odbc.inc.php");
|
|
}
|
|
if (!defined('ADODB_ODBC_DB2')){
|
|
define('ADODB_ODBC_DB2',1);
|
|
|
|
class ADODB_ODBC_DB2 extends ADODB_odbc {
|
|
var $databaseType = "db2";
|
|
var $concat_operator = '||';
|
|
var $sysTime = 'CURRENT TIME';
|
|
var $sysDate = 'CURRENT DATE';
|
|
var $sysTimeStamp = 'CURRENT TIMESTAMP';
|
|
// The complete string representation of a timestamp has the form
|
|
// yyyy-mm-dd-hh.mm.ss.nnnnnn.
|
|
var $fmtTimeStamp = "'Y-m-d-H.i.s'";
|
|
var $ansiOuter = true;
|
|
var $identitySQL = 'values IDENTITY_VAL_LOCAL()';
|
|
var $_bindInputArray = true;
|
|
var $hasInsertID = true;
|
|
var $rsPrefix = 'ADORecordset_odbc_';
|
|
|
|
function ADODB_DB2()
|
|
{
|
|
if (strncmp(PHP_OS,'WIN',3) === 0) $this->curmode = SQL_CUR_USE_ODBC;
|
|
$this->ADODB_odbc();
|
|
}
|
|
|
|
function IfNull( $field, $ifNull )
|
|
{
|
|
return " COALESCE($field, $ifNull) "; // if DB2 UDB
|
|
}
|
|
|
|
function ServerInfo()
|
|
{
|
|
//odbc_setoption($this->_connectionID,1,101 /*SQL_ATTR_ACCESS_MODE*/, 1 /*SQL_MODE_READ_ONLY*/);
|
|
$vers = $this->GetOne('select versionnumber from sysibm.sysversions');
|
|
//odbc_setoption($this->_connectionID,1,101, 0 /*SQL_MODE_READ_WRITE*/);
|
|
return array('description'=>'DB2 ODBC driver', 'version'=>$vers);
|
|
}
|
|
|
|
function _insertid()
|
|
{
|
|
return $this->GetOne($this->identitySQL);
|
|
}
|
|
|
|
function RowLock($tables,$where,$flds='1 as ignore')
|
|
{
|
|
if ($this->_autocommit) $this->BeginTrans();
|
|
return $this->GetOne("select $flds from $tables where $where for update");
|
|
}
|
|
|
|
function MetaTables($ttype=false,$showSchema=false, $qtable="%", $qschema="%")
|
|
{
|
|
global $ADODB_FETCH_MODE;
|
|
|
|
$savem = $ADODB_FETCH_MODE;
|
|
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
|
|
$qid = odbc_tables($this->_connectionID, "", $qschema, $qtable, "");
|
|
|
|
$rs = new ADORecordSet_odbc($qid);
|
|
|
|
$ADODB_FETCH_MODE = $savem;
|
|
if (!$rs) {
|
|
$false = false;
|
|
return $false;
|
|
}
|
|
$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
|
|
|
|
$arr = $rs->GetArray();
|
|
//print_r($arr);
|
|
|
|
$rs->Close();
|
|
$arr2 = array();
|
|
|
|
if ($ttype) {
|
|
$isview = strncmp($ttype,'V',1) === 0;
|
|
}
|
|
for ($i=0; $i < sizeof($arr); $i++) {
|
|
|
|
if (!$arr[$i][2]) continue;
|
|
if (strncmp($arr[$i][1],'SYS',3) === 0) continue;
|
|
|
|
$type = $arr[$i][3];
|
|
|
|
if ($showSchema) $arr[$i][2] = $arr[$i][1].'.'.$arr[$i][2];
|
|
|
|
if ($ttype) {
|
|
if ($isview) {
|
|
if (strncmp($type,'V',1) === 0) $arr2[] = $arr[$i][2];
|
|
} else if (strncmp($type,'T',1) === 0) $arr2[] = $arr[$i][2];
|
|
} else if (strncmp($type,'S',1) !== 0) $arr2[] = $arr[$i][2];
|
|
}
|
|
return $arr2;
|
|
}
|
|
|
|
function MetaIndexes ($table, $primary = FALSE, $owner=false)
|
|
{
|
|
// save old fetch mode
|
|
global $ADODB_FETCH_MODE;
|
|
$save = $ADODB_FETCH_MODE;
|
|
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
|
|
if ($this->fetchMode !== FALSE) {
|
|
$savem = $this->SetFetchMode(FALSE);
|
|
}
|
|
$false = false;
|
|
// get index details
|
|
$table = strtoupper($table);
|
|
$SQL="SELECT NAME, UNIQUERULE, COLNAMES FROM SYSIBM.SYSINDEXES WHERE TBNAME='$table'";
|
|
if ($primary)
|
|
$SQL.= " AND UNIQUERULE='P'";
|
|
$rs = $this->Execute($SQL);
|
|
if (!is_object($rs)) {
|
|
if (isset($savem))
|
|
$this->SetFetchMode($savem);
|
|
$ADODB_FETCH_MODE = $save;
|
|
return $false;
|
|
}
|
|
$indexes = array ();
|
|
// parse index data into array
|
|
while ($row = $rs->FetchRow()) {
|
|
$indexes[$row[0]] = array(
|
|
'unique' => ($row[1] == 'U' || $row[1] == 'P'),
|
|
'columns' => array()
|
|
);
|
|
$cols = ltrim($row[2],'+');
|
|
$indexes[$row[0]]['columns'] = explode('+', $cols);
|
|
}
|
|
if (isset($savem)) {
|
|
$this->SetFetchMode($savem);
|
|
$ADODB_FETCH_MODE = $save;
|
|
}
|
|
return $indexes;
|
|
}
|
|
|
|
// Format date column in sql string given an input format that understands Y M D
|
|
function SQLDate($fmt, $col=false)
|
|
{
|
|
// use right() and replace() ?
|
|
if (!$col) $col = $this->sysDate;
|
|
$s = '';
|
|
|
|
$len = strlen($fmt);
|
|
for ($i=0; $i < $len; $i++) {
|
|
if ($s) $s .= '||';
|
|
$ch = $fmt[$i];
|
|
switch($ch) {
|
|
case 'Y':
|
|
case 'y':
|
|
$s .= "char(year($col))";
|
|
break;
|
|
case 'M':
|
|
$s .= "substr(monthname($col),1,3)";
|
|
break;
|
|
case 'm':
|
|
$s .= "right(digits(month($col)),2)";
|
|
break;
|
|
case 'D':
|
|
case 'd':
|
|
$s .= "right(digits(day($col)),2)";
|
|
break;
|
|
case 'H':
|
|
case 'h':
|
|
if ($col != $this->sysDate) $s .= "right(digits(hour($col)),2)";
|
|
else $s .= "''";
|
|
break;
|
|
case 'i':
|
|
case 'I':
|
|
if ($col != $this->sysDate)
|
|
$s .= "right(digits(minute($col)),2)";
|
|
else $s .= "''";
|
|
break;
|
|
case 'S':
|
|
case 's':
|
|
if ($col != $this->sysDate)
|
|
$s .= "right(digits(second($col)),2)";
|
|
else $s .= "''";
|
|
break;
|
|
default:
|
|
if ($ch == '\\') {
|
|
$i++;
|
|
$ch = substr($fmt,$i,1);
|
|
}
|
|
$s .= $this->qstr($ch);
|
|
}
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
|
|
function SelectLimit($sql,$nrows=-1,$offset=-1,$inputArr=false)
|
|
{
|
|
$nrows = (integer) $nrows;
|
|
if ($offset <= 0) {
|
|
// could also use " OPTIMIZE FOR $nrows ROWS "
|
|
if ($nrows >= 0) $sql .= " FETCH FIRST $nrows ROWS ONLY ";
|
|
$rs = $this->Execute($sql,$inputArr);
|
|
} else {
|
|
if ($offset > 0 && $nrows < 0);
|
|
else {
|
|
$nrows += $offset;
|
|
$sql .= " FETCH FIRST $nrows ROWS ONLY ";
|
|
}
|
|
$rs = ADOConnection::SelectLimit($sql,-1,$offset,$inputArr);
|
|
}
|
|
|
|
return $rs;
|
|
}
|
|
|
|
};
|
|
|
|
|
|
class ADORecordSet_odbc_db2 extends ADORecordSet_odbc {
|
|
|
|
var $databaseType = "db2";
|
|
|
|
function ADORecordSet_db2($id,$mode=false)
|
|
{
|
|
$this->ADORecordSet_odbc($id,$mode);
|
|
}
|
|
|
|
function MetaType($t,$len=-1,$fieldobj=false)
|
|
{
|
|
if (is_object($t)) {
|
|
$fieldobj = $t;
|
|
$t = $fieldobj->type;
|
|
$len = $fieldobj->max_length;
|
|
}
|
|
|
|
switch (strtoupper($t)) {
|
|
case 'VARCHAR':
|
|
case 'CHAR':
|
|
case 'CHARACTER':
|
|
case 'C':
|
|
if ($len <= $this->blobSize) return 'C';
|
|
|
|
case 'LONGCHAR':
|
|
case 'TEXT':
|
|
case 'CLOB':
|
|
case 'DBCLOB': // double-byte
|
|
case 'X':
|
|
return 'X';
|
|
|
|
case 'BLOB':
|
|
case 'GRAPHIC':
|
|
case 'VARGRAPHIC':
|
|
return 'B';
|
|
|
|
case 'DATE':
|
|
case 'D':
|
|
return 'D';
|
|
|
|
case 'TIME':
|
|
case 'TIMESTAMP':
|
|
case 'T':
|
|
return 'T';
|
|
|
|
//case 'BOOLEAN':
|
|
//case 'BIT':
|
|
// return 'L';
|
|
|
|
//case 'COUNTER':
|
|
// return 'R';
|
|
|
|
case 'INT':
|
|
case 'INTEGER':
|
|
case 'BIGINT':
|
|
case 'SMALLINT':
|
|
case 'I':
|
|
return 'I';
|
|
|
|
default: return 'N';
|
|
}
|
|
}
|
|
}
|
|
|
|
} //define
|
|
?>
|