I was recently working on a PHP application for a Client where I was faced with a Multi-Dimensional Array filled with duplicate entries and a lot of unusable data.

What I needed was to extract all the unique elements of the Array so I had some clean data to work with. 
I googled ‘PHP unique array’ and found what I thought I was looking for.

Unfortunately I found that the array_unique function only works on Integers and Strings! Luckily for me, someone had the exact same issue and wrote a custom function to extract unique elements on Multi-Dimensional Arrays:

function super_unique($array)
  $result = array_map("unserialize", array_unique(array_map("serialize", $array)));
  foreach ($result as $key => $value)
    if ( is_array($value) )
      $result[$key] = super_unique($value);
  return $result;

Using this function, I was able to filter my Multi-Dimensional Array to return only unique elements and work with the clean data I needed to finish the application.

Hopefully this helps some other developers out there!

You may also like

ASP.NET Button – Prevent Double Clicks Part 2

A while ago we posted an article on how to prevent double clicks on buttons in ASP.Net. This solution was a little code heavy for our liking and so after a bit of playing around we came up with this simple jQuery solution.

Keep Reading

Sorting out SVN checkin/checkout issues

I work with SVN (our source control system) pretty extensively on a day-to-day basis. Having worked with several other systems in the past I must admit it is an excellent source/version control system, very easy to use for simple routine operations. In particular I’m talking about a “dead end” situation when there is a checkin/checkout conflict.

Keep Reading

Newsletter sign up

Every couple of months we send out an update on what's been happening around our office and the web. Sign up and see what you think. And of course, we never spam.