ID: 49352
Comment by: chey dot smith at gmail dot com
Reported By: VJTD3 at VJTD3 dot com
Status: Open
Bug Type: dBase related
Operating System: Linux
PHP Version: 5.3.0
New Comment:
I am having trouble with this as well when trying to modify an existing
HASH type database.
What happens is that the file is modified but when the application that
owns the DB tries to read when you wrote it doesn't see the new data
since it is compiled to read a BTREE type in my case.
So there is a need to be able to specify the type from within PHP's
dba_open function.
Previous Comments:
------------------------------------------------------------------------
[2009-08-25 00:33:32] VJTD3 at VJTD3 dot com
Description:
------------
dba_open DB4 DB_HASH format can not be choosen to create a database
dba_open when used with the "driver" db4 defaults to btree but hash is
also needed. DB_HASH is not defined and isn't passed when defined to the
creation environment.
example showing DB_HASH not defined
<?php
echo (defined('DB_HASH') ? 1 : 0);
?>
there are 2 types of database structures, hash and btree.
db.h
typedef enum {
DB_BTREE=1,
DB_HASH=2,
DB_RECNO=3,
DB_QUEUE=4,
DB_UNKNOWN=5
} DBTYPE;
is from the source files...
http://download.oracle.com/berkeley-db/db-4.7.25.NC.tar.gz
db-4.7.25.NC/build_brew/db.h
by default php uses btree to create but hash is needed too. there is no
way to change the flags to use hash.
http://us3.php.net/manual/en/function.dba-open.php
resource dba_open ( string $path , string $mode [, string $handler
[, mixed $... ]] )
php-5.2.9/dba_db4.c line 74-76
type = info->mode == DBA_READER ? DB_UNKNOWN :
info->mode == DBA_TRUNC ? DB_BTREE :
s ? DB_BTREE : DB_UNKNOWN;
php-5.2.9/dba_db4.c line 100 - 104
#if (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1)
(err=dbp->open(dbp, 0, info->path, NULL, type, gmode,
filemode)) ==
0) {
#else
(err=dbp->open(dbp, info->path, NULL, type, gmode,
filemode)) == 0)
{
#endif
http://www.oracle.com/technology/documentation/berkeley-db/db/ref/upgrade.4.1/fop.html
if ((ret = dbp->open(dbp, "file", NULL, DB_BTREE, DB_CREATE, 0664)) !=
0) {
(void)dbp->close(dbp);
goto err_handler;
}
(btree example, hash would be DB_HASH)
Reproduce code:
---------------
<?php
echo (defined('DB_HASH') ? 1 : 0);
?>
Expected result:
----------------
1 and databases to be created in hash format
Actual result:
--------------
0 and database format is only btree with no way to change to hash
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=49352&edit=1
