I have a LAMP stack, and I thought it might be nice to use the MySQL configuration file to allow PDO to connect to the MySQL database without the need to place DB credentials within our code structure
So I created a group in /etc/my.cnf.d/gggg.cnf
[clientGggg]
user=uuuu
password=pppp
database=dddd
and can now connect to the DB through the command line with mysql --defaults-group-suffix=gggg
I then tried to create a test DB connection in PHP with
$db = new PDO("mysql", null, null, [PDO::MYSQL_ATTR_READ_DEFAULT_GROUP => 'gggg']);
but I received the error
Undefined constant PDO::MYSQL_ATTR_READ_DEFAULT_GROUP
Checking the PDO docs for this attribute reveals the following:
PDO::MYSQL_ATTR_READ_DEFAULT_GROUP (int)
Read options from the named group from my.cnf or the file specified with MYSQL_READ_DEFAULT_FILE. This option is not available if mysqlnd is used, because mysqlnd does not read the mysql configuration files.
and checking my phpinfo(); reveals I am indeed using mysqlnd
Why is this limitation in place? Is there a workaround? Or am I doomed to write/load my credentials into PHP?
Related
I've been given access to an Oracle Server via ODBC and tested the connection using Oracle SQL Developer. These are the connection constants I've set in PHP:
define('APP_DB_HOST', '192.168.1.1');
define('APP_DB_PORT', '1521');
define('APP_DB_USER', 'MyUser');
define('APP_DB_PASS', 'MyPass');
define('APP_DB_SID', 'MyDatabaseSID');
define('APP_DB_SCHEMA', 'MyDatabaseSchema');
With ADOdb/ODBC, I should be able to use the below, so that I don't need to involve a tnsnames.ora entry:enter link description here
$dsn = '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST='.APP_DB_HOST.')(PORT='.APP_DB_PORT.'))(CONNECT_DATA=(SERVICE_NAME='.APP_DB_SID.')));User Id='.APP_DB_USER.';Password='.APP_DB_PASS.';';
$db->PConnect($dsn, APP_DB_USER, APP_DB_PASS, APP_DB_SCHEMA);
I get the ADOdb Warning:
Warning: odbc_connect(): SQL error: [unixODBC][Driver Manager]Data source name not found, and no default driver specified, SQL state IM002 in SQLConnect in [..]/adodb/drivers/adodb-odbc_oracle.inc.php on line 87
Have others done this before, and if so, how so?
Beyond ADOdb, if anybody has a less complicated method of connecting by ODBC to Oracle with PHP7.4+, please do share.
I would also suggest you to move to the OCI8 native driver if you have a bit of time and not too much refactoring to do.
Your server should already have an Oracle client installed (to make the current TNS and ODBC work), so the only thing to do is to install the OCI8 Oracle DDL PHP extension. Just copy it to php/ext/ and load it in your php.ini
In the meantime, you can test if the following code works:
require_once("include/adodb5/adodb.inc.php"); //depends on your adodb folder
$conn = NewADOConnection("oci8");
$conn->connect(APP_DB_HOST, APP_DB_USER, APP_DB_PASS, APP_DB_SID);
For info, you can check if your system admin has already installed the OCI8 extension by looking for the OCI8 section in the PHPINFO :
If that is an option for you, I would strongly recommend to connect using the native oci8 driver, instead of relying on ODBC. Refer to ADOdb documentation for connection examples.
If you're stuck with ODBC, then I believe you need to adjust your DSN to specify the name of the driver you want to use in the connection string, e.g. Oracle in instantclient_19_6
Driver={OdbcDriverName};Server=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx)(PORT=xxx))(CONNECT_DATA=(SERVICE_NAME=xxx)))
In my opinion it's better to specify the user id and password in the function call, i.e. $db->connect($dsn, $username, $password), but if you must have it in the connection string, you may want to try it with uid=xxx;pwd=xxx instead of User Id=xxx;Password=xxx
As an alternative, you could also create a System DSN in your ODBC configuration, and just refer to it by name, instead of hardcoding the TNS connection string directly in your code.
See also Create a DSN for the function odbc_connect for Oracle.
i'm trying to dump a sqLite Database from memory to file (for loggin purposes) but it gives me an error.
I've tried:
conn = new SQLite3("dump.db");
$db->backup( $conn );
but it gives me an error:
Call to undefined method SQLite3::backup()
I'm using sqLite Version 3.28.0
Any idea how it would work?
Your SQLite3 extension is old and doesn't have all the functions (SQLite3::backup has been introduced arround PHP 7.4).
See the manual page: https://www.php.net/manual/en/sqlite3.backup.php
As of SQLite 3.27.0 (2019-02-07), it is also possible to use the statement VACUUM INTO 'file.db'; to backup the database to a new file.
If upgrading is not an option, you can simply use copy().
It seems nobody had this problem yet.... With db2_connect I found docs that decrible how to load a default library list (*LIBL) on connection but with PDO nothing!
I'd like to perform statements without specifing always the library name in front of file name. I already created a JOB DESCRIPTION to load the libraries, and when I log in with the PC5250 emulator those library are online.
But if I run a query with PDO without specifying the library name following is returned:
Error executing sth in testGet for AS400 SQLSTATE[42S02]:
Base table or view not found: 0
[IBM][System i Access ODBC Driver][DB2 for i5/OS]SQL0204 -
TESTFILE in WEB type *FILE not found.
(SQLPrepare[0] at ext\pdo_odbc\odbc_driver.c:206)
To use the library list, you will need to make sure your connection attributes specify system naming, and I would avoid setting a current schema.
Without much knowledge of PHP + PDO, the stackoveflow tag wiki gives a good introduction. Check that PDO is configured for proper settings for DB2 for i, not LUW or z. Likewise check db2_connect settings. (Why are you using that, instead of straight ODBC?)
I know it's been awhile since you posted but I came across some info on how to do library lists using the PDO driver... see http://yips.idevcloud.com/wiki/index.php/XMLSERVICE/PHPPDOChangeLog.
So for example you could do something like this:
$options = [
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_AUTOCOMMIT => true,
PDO::I5_ATTR_DBC_SYS_NAMING => true,
PDO::I5_ATTR_DBC_LIBL => "LIB1 LIB2 LIB3",
];
$db = new PDO("ibm:SYSTEM", "user", "password", $options);
Keep in mind this will probably require a recent Zend Server (since Dec 2014). I know the latest stuff is in the new ZS 8.5 but I'm not sure about older releases.
You might also be able to leave off the library list option - in my limited testing this appears to let it use the library list from the job description. I'm not sure about the current library and YMMV but I'd be curious to hear back if it works for you or not.
Also for what it's worth an email address for the official maintainer is listed on http://pecl.php.net/package/PDO_IBM. Questions could also be sent to the WEB400 mailing list (http://lists.midrange.com/mailman/listinfo/web400), I think people who are involved in the development of the pdo_ibm driver are on there as well.
If you're talking about these docs, then that is if you're using PDO_IBM on IBM i. I don't think those settings are supported on any other platform. From your error message, it seems that you are using the IBM i Access ODBC driver through PDO_ODBC. The IBM i Access ODBC driver connects to a QZDASOINIT prestart job running in QUSRSYS subsystem. If you want those jobs to use a different job description, you need to use CHGPJE to change it: CHGPJE SBSD(QUSRSYS) PGM(QSYS/QZDASOINIT) JOBD(MYLIB/MYJOBD). If you're using SSL connections, also change QZDASSINIT jobs. You'll need to end any existing QZDASOINIT/QZDASSINIT jobs and the new pre-start jobs will pick up the new settings. Note that this will affect all ODBC, JDBC, OLEDB, .NET connections for IBM i Access drivers.
You can configure the library list through the DSN as well, by setting the DBQ connection string or DefaultLibraries ODBC.INI setting or setting the "Library List" value under the Server tab from the DSN configuration GUI on Windows.
Having a hard time to figure out the path to set for my sqlite3 database using PDO in PHP.
My code as follows:
$handle = new PDO('sqlite:/C:/New folder/sqlite/test.db') or die("Could not open
database");
echo $handle;
$query = "SELECT * FROM student";
Debugging result:
It returns a blank web page instead of printing out the $handle. I already set my desired path where my sqlite database file was stored. What did i miss out ?
Kindly advise.
Firstly you need to know what PDO drivers are installed, make a blank file with in it:
<?php phpinfo(); ?>
Then look for the PDO section and you should see somthing along the lines of:
PDO drivers mysql, sqlite, sqlite2
If you only have mysql then you need to install the sqlite pdo driver. Use google for that, dont forget also check your production server too, else your create something you possibly cant use on your hosting.
As the PDO driver is much like the old sqlite_open() it will create the database file for you if its not found.
also as you may be aware spaces in file paths are not so good and can cause problems,
Instead of using:
sqlite:/C:/New folder/sqlite/test.db you should at least rename your New Folder to somthing else: sqlite:/New_folder/sqlite/test.db
I have an EC2 instance running a WordPress site. The WordPress db is on a RDS instance. I want to connect to the db over SSL.
From what I've read, the MySQL extension that WordPress uses out of the box doesn't support SSL. So, I've installed a WordPress db script that uses MySQLi, which does support SSL.
The problem I encountered is that Amazon only supplies one key file (more info), and all the examples I can find using MySQLi over SSL include at least 3 files:
$db = mysqli_init();
$db->ssl_set('server-key.pem','server-cert.pem','cacert.pem',NULL,NULL);
I'm able to connect to my db over SSL from the mysql command line app. Can anyone tell me what I need to do to get PHP's MySQLi extension to work, given that I only have the 1 file?
Turns out this was less complicated than I thought. Turning up the error reporting level uncovered an error in my code that I hadn't caught. Using ssl_set this way works:
$db = mysqli_init();
$db->ssl_set(NULL,NULL,'/path/to/mysql-ssl-ca-cert.pem',NULL,NULL);
$db->real_connect($dbhost,$dbuser,$dbpassword,$dbname);
Try this:
$db = mysqli_init();
$db->ssl_set(null, 'https://rds.amazonaws.com/doc/mysql-ssl-ca-cert.pem', null, null, null);