Solved

Split comma separated values from a table column into rows using php PHP

Posted on 2016-09-11
9
41 Views
Last Modified: 2016-10-01
Would anyone have an idea or point me in a direction on how I would be able to split a comma separated field into it's own rows on another table? I'm currently using php and mysql. Greatly appreciated. Thanks.

Eddie
0
Comment
Question by:Edward Guereque
  • 3
  • 2
  • 2
  • +1
9 Comments
 
LVL 109

Assisted Solution

by:Ray Paseur
Ray Paseur earned 125 total points (awarded by participants)
ID: 41793622
The most important and useful thing we can have for a question like this is a test data set and an understanding of where you are on the novice-expert continuum in the relevant technologies.  Armed with a little more information, I am sure we can get you a tested-and-working code sample!

PHP has the explode() function that might be helpful, but it's got some data-dependent quirks, so we might do well to see the actual data we are dealing with.
1
 
LVL 77

Assisted Solution

by:arnold
arnold earned 125 total points (awarded by participants)
ID: 41793637
You would pull he data into php, and split it within php. It seems from your question you want to convert the data within MySQL.

The data sample RAy mentioned could help.
1
 

Author Comment

by:Edward Guereque
ID: 41793774
Yes,  here's a better example.  I have submissions table in a database.  In the submissions table there is a field called invalid reasons.  Some submissions have one invalid reason and some have three or four and they are comma delimited in that field. I am wanting to move the invalid reasons field into rows in its own table.  I'm thinking I'm needing to keep the same id for the multiple invalid reasons as well.  Hope this isn't too confusing.  

Oh, the database is MySQL and code I'm using is PHP.  Thanks.
0
Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

 

Author Comment

by:Edward Guereque
ID: 41793778
Oh yes, I'm thinking I need select from the database, iterated through the rows and explode (explode function) the rows that have comma delimited values then insert into it's own table.
1
 
LVL 54

Accepted Solution

by:
Julian Hansen earned 250 total points (awarded by participants)
ID: 41793805
Do you mean something like this
// ASSUMES mysqli CONNECT $db

// GET RECORDS FROM submissions TABLE 
// (ADD WHERE AS NEEDED)
$query = "SELECT * FROM submissions";
$result = $db->query($query);

// LOOP THROUGH RETURNED ROWS
while($row = $result->fetch_object()) {
   // explode REASON INTO reasons
   $reasons = explode(',', $row->reasons);

   // CREATE THE INSERT BATCH QUERY 
   $rquery = "INSERT INTO reasons (submission_id, reason) VALUES"

   // ADD THE REASONS
   foreach($reasons as $r) {
      $rquery .= "('{$row->id}','{$r}'),";
   }

   // REMOVE TRAILING ,
   trim($rquery, ',');

   // SEND TO DB
   $db->query($rquery);
}

Open in new window

0
 
LVL 109

Expert Comment

by:Ray Paseur
ID: 41794009
@Julian: I think you're on the right track, but there probably needs to be a many-to-many relationship between submissions  and reasons, implying some kind of a junction table or similar structure.

@Edward: Please don't keep us guessing.  A description  of your data is never as good as seeing the actual  data.  It's like showing a hungry man a picture of a sandwich!  Please post the test data.  Thanks.

If you're new to PHP and want to learn the language, this article can help you get a good footing.
https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html
1
 

Author Comment

by:Edward Guereque
ID: 41794581
@Ray:  Thank you for sharing your Post test data link and the PHP articles as well.  I will be posting test data shortly. I'm new to Experts Exchange and I was wondering how people are sharing test data.  Or I can attach a csv file a well.  Thanks.

@Julian:  Thank you for your input.  I'm taking a look.
0
 
LVL 54

Expert Comment

by:Julian Hansen
ID: 41794693
@Julian: I think you're on the right track, but there probably needs to be a many-to-many relationship between submissions  and reasons, implying some kind of a junction table or similar structure.
If we are maintaining reasons as an entity on its own - but that would imply some sort of structured selection of reasons. If people are freeforming it then the link to reasons does not need to go through a linking table.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Since I wrote the original article about Handling Date and Time in PHP and MySQL (http://www.experts-exchange.com/articles/201/Handling-Date-and-Time-in-PHP-and-MySQL.html) several years ago, it seemed like now was a good time to updat…
3 proven steps to speed up Magento powered sites. The article focus is on optimizing time to first byte (TTFB), full page caching and configuring server for optimal performance.
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question