I need to have a button to fire an action to copy all records from a defined client from one database to another with php.
The template database has 12 tables (diferent rows on each) but all with the row client_id to make the WHERE clausule work properly.
The question is, how do I do this?
Thanks,
Pluda
Since PHP is a Server-side programming language, you can't copy something from the client. You can however upload Data (like XML), parse it and then insert it into your MySQL Database.
If you want to copy records from one to another database, you might want to read from the Database and save them in a format like SQL. Then, you could send those querys to the second Database.
An advise at this point: If you need to make the same Query (with different values) over and over again, you should use a PreparedStatement. It will be compiled in the Database and then just filled out with new values. This is way faster then using an Insert every time.
Related
I have a Wordpress site that utilizes a custom post type, call it CPT-1, that I created using JetEngine. Inside of CPT-1 are meta fields. Once that was setup, I did a bulk insert of data using Ultimate CSV Importer Pro and it put this information into CPT-1 and I could put each column of data into the meta fields I wanted to use. These fields are then used later in tables.
Is there a way to go around the CSV Importer part of this process and just pull from a database? In the long term, i'd like to make changes to certain posts and upload different posts while using CPT-1 but I don't think using a CSV every time will be easy or accurate. If I could just pull from a database that I make updates to, I can track those changes easily and manage it.
I have database experience but not so much with Wordpress databases. What tables would I have to pay attention to if I were to go down this route?
Wordpress uses MySQL as a backend, so there is no reason you can't just insert the data directly. You'll need to get the credentials Wordpress uses to connect to the database, and then connect yourself, probably from your own custom PHP script.
I am generally skiddish doing things like you described because Wordpress is a complex piece of software and I don't have a lot of awareness of what it is doing behind-the-scenes (nor do they really intend users to have such awareness, most functionality is hidden from the user.)
However, if you have been doing a CSV import, and you have tested it extensively, and it's working fine with that method, there is no reason you couldn't carry out this same thing with less manual work on your part via a PHP script.
I'm afraid I can't get much more specific in my answer because I don't have information about what exactly you did with the CSV.
A straightforward (but not super efficient) way of doing this would be a PHP script where you initiate a database connection to the database you update, and a second connection to the MySQL database, fetch a query of whatever rows you want to update (whatever you would normally be exporting via CSV) and iterate row-by-row and insert this data into the MySQL database. You can make this significantly more efficient by making a single prepared statement, and then executing it repeatedly with each row of values.
A more efficient way of doing it would be to pull the data into your PHP script and then format it as a single query which you could then add into the MySQL database.
If you already have CSV importing working, you could even do a "lazy" solution where you just write a PHP script that generates a CSV and then feeds it into MySQL and imports it the same way your other program was. It's hard for me to tell from what you said, which of these solutions would work. However, I have used all three solutions, depending on what I'm doing and what kind of error handling I want.
In general, if errors happen rarely-to-never you are probably better off with the single, bulk insert methods whether one query or PHP automating the export of a CSV and then passing it to be imported into Wordpress' MySQL database.
I would like to back up one of my database tables, abc using PHP.
One of the column is timestamp. I would like to back up the table that is 3 months old into filename.sql.gz and delete the data from the table. Keep latest 3 months data on the table.
If possible the output file only has the INSERT query.
You first need to go through the PHP+database integration tutorials. You can achieve above in mysql query itself. You can use PHP as well...you have to write your own code for this simple task. following are the steps that I will follow in completing this tasks, you can modify the steps according to your requirements...
you have not mentioned which database you are using, am assuming its Mysql/mariadb
Connect database (proper access required), some PHP file management knowledge also necessary
Based on timestamp, you should write a query which can pull the old data and write it to a .sql file (plenty of questions have already been asked on this topic in stackoverflow)
On success of STEP 2, you can perform DELETE operation
While doing this activity, make sure that no other process/queries are running on this database/table.
Script must include TRANSACTION START/BEGIN, COMMIT and ROLLBACK
If you want output file in INSERT query then BATCH INSERT is required. Refer this to get an idea how batch query looks like (How to do a batch insert in MySQL)
You can write a custom PHP function to generate BATCH implementation.
No need to touch the data that you want to keep, will remain as it is
I need a way to constantly (in a loop) check if a new MySQL row was added, and if so, do some thing with it, specifically send a notification to users that it pertains to, but I can handle that. I just need to know how to execute code when the number of MySQL rows changes.
You might wish to consider using a MySQL trigger on insert and/or delete:
http://dev.mysql.com/doc/refman/5.0/en/triggers.html
http://net.tutsplus.com/tutorials/databases/introduction-to-mysql-triggers/
I'm attempting to make a ticket system for out smaller company. I've made a submission form that saves to a mySQL database. I can save the data into the table and pull the date into a html table. I've been searching all day, however, to figure out how to put in a cell that will allow me to click a button, link, or whatever to change that row to completed. I have a field in the database for it, but I don't know how to get that cell into the table or how to get the link to understand which row I'm talking about. I've been searching Google for awhile and only getting how to make a html table with mySQL data or how to INSERT into a mySQL table.
You'll need 3 things: an UPDATE statement, the field in the row you want to update, and some unique way of identifying which row (entry) you want to update.
You'll probably want to create a link something similar to:
<a href='/path/to/update.php?id=myUniqueIdentifier'>complete</a>
and on the php page you'll want to use the $_GET['id'] passed (make sure to use msyql_real_escape_string()) to UPDATE your row and set your completed flag to whatever you want.
Lynda.com has a solid MySQL essentials video that has something very similar to what you are looking for. It would definitely be a good starting point for building your own custom solution. Or I'm sure you could just use their user interface to interact with mysql inside the browser.
I have no affiliation with Lynda.com - I just used their site to learn almost everything i know about programming.
I am wondering if it is possible to automate or by button press to move mysql table information from one table to another table deleting it from the first table and putting it in another table? Using php.
My mysql table is big and the page that adds the information to that table has 70 query's on it which slows the page refresh times. I need to move information from the first table to the second at a certain time of day everyday so that those querys don't have to look through all of my giant 27k row table.
Is this possible?
Also if someone could help me with my comment on this page I would be grateful.
link text
PHP doesn't have a constantly running server you can schedule background tasks with.
If you have access to the server you can set up a cron job (or scheduled task under windows) to run the PHP script for you.
Or (and this isnt so nice) you can put the script on the webserver and call it manually at the appropriate time by entering the URL in your browser.
A 27k row table is small by SQL standards, as long as it is properly indexed.
For instance, if you don't care about data from yesterday, you can add an indexed date column and filter with WHERE myDate > NOW() - INTERVAL 1 DAY, and SQL will automatically restrict the query to the rows younger than 24 hours.
I am wondering if it is possible to automate or by button press to move mysql table information from one table to another table deleting it from the first table and putting it in another table? Using php.
You can initiate it from PHP, but what you ask is effectively MySQL's domain.
It can be accomplished in two statements:
Use an INSERT INTO statement to copy the rows from the old table to the new one
Delete the old table
My preference would be that this occurs in a stored procedure for sake of a transaction and ease of execution (in case you want it initiated by CRON/etc) because it would be easier to call one thing vs a couple or more.
27k is not very big table and MySQL should work ok with that. Do you have all the required indexes? Did you used EXPLAIN on your slow queries?
As for the question about moving data from one table to another - create a php script that will be run by CRON and will move rows one by one. What's the problem here?