i am user postgresql 9.1
When i type the fallowing :
<?php
new PostgreSQL ('localhost','5432','postgres','postgres','12345'); i get the error
?>
Fatal error: Class 'PostgreSQL' not found in /var/www/vhosts/task/db_actions.php on line 11
I tried with new Postgresql or new Pg_SQL but same thing. I am using Ubuntu, can anybody help
Well, even if you had a PHP class called "PostgreSQL" (you don't - that's what the error is saying) you're just connecting then throwing the object away.
Perhaps take some time to read the PHP manuals, maybe search the internet and find a beginners guide or turorial you find helpful.
A description of the simple database access functions are here and a popular cross-database wrapper is known as PDO. Good Luck!
Edited in response to comment:
If you know the correct driver class to use, and how to use it then why have you given a deliberately incorrect example of your code? If you know what the error means then you no longer have a question. You don't know what the error means because you asked. There is no (standard) class "PostgreSQL" that acts as a database driver that I know of. Nor are there "ASDFASDF" or "QWERTYUIOP" classes that will talk to a PostgreSQL database.
You're not using either of the two standard driver classes that I linked to. So, either you're advanced enough to have rejected those and written your own driver or you don't know what you're doing. If you've not found the standard drivers in the PHP manuals and/or don't know how to install them then you need to take the time to find a tutorial - you don't have one question, you've got dozens but can't see them yet because you're stuck behind this one.
Clearer now?
Related
On the side of my Gooddata project, I maintain a small PostgreSQL database that contains a few tables.
I would like to be able to integrate both my ETL processes using the same tool, and it seems to me cloudconnect would be the easiest way, since I already have my whole GoodData ETL in it.
Here are the ways I tried to do it without success:
I tried to have a look in the documentation, and it seems to me that all the functionalities of CloverETL that enabled this (DBOutput, PostGreSQLDataWriter) are not available in Cloudconnect.
I managed to connect to the Agile Datawarehouse Service (Database attached to GoodData), but it seems that only the ADS database is able to understand the request:
COPY MyDataBaseTable (field1,field2) FROM LOCAL '${DATA_TMP_DIR}/CIforADS.csv'
even when I adapt the syntax to PostgreSQL because the dynamic addressing I use here does not seem to work.
Is there any way to proceed that I'm missing? Can anyone think of a workaround?
In general this could be achieved by using of "DBExecute" component, but
I'm not sure if I understand it well - do you want to load data into your own Postgres instance using CloudConnect?
I have a back end development task where I am required to access a postgresql server and retrieve some reports. In the specification this is how it's stated
" You have two abstract reports made available to you on a PostgreSQL server located at:
postgres://aaaaaaaaaa.bbbbb.org/ccccc "
(I have censored the link because it contains the company name)
Basically I have no idea what to do with this link as I've never seen anything like it before. It doesn't work in a browser because it's not http. I have looked online and at other questions here on stackoverflow but I've seen nothing similar. Could it also be some form of typo?
You haven't looked very hard. Google "postgresql connection url".
http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
or it could be part of a JDBC connection string
https://jdbc.postgresql.org/documentation/head/connect.html
I'm assuming you've made a mistake in your question and it's "postgresql:" not "postgres:".
is there a way to connect to a postgreSQL Database? I've noticed that the PHP module doesn't have the postgres extensions and its not possible to load it dynamically.
Is there any other way? An external PHP scripts will be the worst solution.
Alex
I don't have direct experience with Tide, but reviewing their docs here are the places I would look:
Javascript-> PostgreSQL Is there a possibility of connecting postgreSQL directly to Javascript?
Python -> PostgreSQL, like psychopg.
If that fails, along with other similar languages, MAY be able to find another driver written fully in a language like this.
The PostgreSQL protocol is extensively documented and several implementations exist for it. You could probably adapt either the Javascript driver or implement in another language to give you a direct driver to PostgreSQL http://www.postgresql.org/docs/9.1/static/protocol-flow.html
I am attempting to integrate Zend with MongoDB. I think I am almost there, but I need some help to complete the task. I am new to both zend and mongo, but reasonably experienced with PHP and MySQL.
Some details:
My Zend project is based on the skeleton tutorial at http://framework.zend.com/manual/2.0/en/user-guide/skeleton-application.html. This works fine on my computer, but is mysql-based.
I have installed MongoDB. I can write nosql on the command line and I can instantiate a MongoClient object in a PHP script, so those things seem to work and talk to each other.
I want to use mongo instead of mysql, and I have implemented Doctrine. I have no idea what Doctrine does, and I've been through several searches to try and find how to run mongo commands in zend. These facts lead me to conclude that I don't know what I'm doing.
So to the specifics of my question:
As I understand it, I should be instantiating a mongo object somewhere. If so, where should I put the instantiation in zend?
If not, presumably I need an existing instantiation of the mongo object to run various find/save commands from inside the model class, so if that's true, how do I access the existing mongo object?
Thanks for any help, and clarification questions are equally welcome.
Edited 13/12/2012 for clarification.
With the given answers it seems I am on the right track, and I can further clarify what I need:
Looking at the Doctrine Documentation linked below, I am still unclear where the document manager instantiation is supposed to occur. I would have expected it to go into a more generic location which is run on every page load. Also, most of the tutorials I find seem to refer to a file structure different given from the skeleton application, so when they say to put certain things in certain places, I'm not sure where they mean. For example, I keep seeing references to bootstrap files, but my only bootstrap files are in test directories.
My questions are these:
What code do I need to add into the indexAction function (which definitely responds when I go to the correct URL) if I simply want to print_r all the documents in a collection?
Do I need to add any other code elsewhere, if so where, and what code?
These are the different bits and what they do, working from the bottom up:
mongodb: data persistance
doctrineODM: Object Document Mapper. This maps mongo documents to php objects. It means you don't have to worry about doing any calls against mongo directly - you just work with plain old php objects. To use doctrineODM you need to define your model classes, and get the hang of using the DocumentManager - suggested, the Doctrine docs are quite good.
doctrineMongoODMModule: A module that integrates doctrine with zf2. The main thing it does is allow you to configure doctrine using zf2 config style, and gives you access to the DocumentManager via the zf2 ServiceManager. (I does quite a few other things too, but they are the main ones)
zf2 (mvc): Lets you define an interface so other things (like a web client) can manipulate your documents.
There is brilliant module doctrine-mongo-odm-module for mongoDB access.
Just add to composer.json
"require": {
....
"doctrine/doctrine-mongo-odm-module": "dev-master",
....
Doctrine documentation should help how to use it.
My App needs to connect to and grab data from a MySQL database sitting on a server. I've successfully interfaced with local SQLITE databases in my Apps, but this is the first time I've had to interface with a remote MySQL database.
I understand this process involves:
1) the iPhone App sending this request to the server
2) some sort of API gets executed and it does the actual "talking" to the Database on the server, and then it returns the query results as XML (or JSON.)
3) the iPhone then parses the returned information and uses it however it needs to.
What I need help with is step # 2 - the API. I don't know PHP, I don't know PERL - do I really have to learn one of these just to write an API? I thought that this iphone-to-remote-MySQL task would be so commonplace that such API's would already be out there, available freely - but I'm not really seeing anything.
I know Objective-C really well - but should I be using XML or JSON for this? Should I be learning PERL or PHP?
any tips or advice would be highly appreciated.
It's hard to give you a definite answer without knowing more precisely what you are looking at, but it sounds like your web service/API part should be quite light. In this case, it should be quite easy to write it in any language. If you know Objective-C well, it should be very easy to pick up some PHP or Ruby.
You mention PHP and Perl. The good thing I see with PHP is that it's available on any hosting service. For instance, with PHP you can make MySQL queries in a few lines of code.
Otherwise, if the web service lives on a machine that you own or if you have more flexibility, it might be easier to write something using Ruby and a small framework like Sinatra.
Regarding using XML or JSON to serialize the data, this will depend on what type of data your API returns. Generally, JSON will be much simpler and the support is good on both side:
- With Ruby, you can see how easy it is to use JSON here: http://flori.github.com/json/
- With Objective-C, you would use NSJSONSerialization available starting with iOS5.
Well you can talk to remote MySQL server using Objective C client directly from iphone
as show here