Iterating over muli-dimensional arrays.

[shagymoe]

Lets say I have a multi-dimensional array like this:

$file_mod_info[$mod_type][$mod_file_path][$index]='mod_string';

Then I iterate over it like so:

foreach ($file_mod_info as $mod_type => $mod_file_path_array) {
  foreach ($mod_fil_path_array as $mod_file_path => $index_arrray) {
    foreach ($index_array as $index => $mod_string) {
      echo 'Mod Type: ' . $mod_type . "\n" .
             'Mod File Path: ' . $mod_file_path . "\n" .
             'Mod Index: ' . $mod_index . "\n" .
             'Mod String: ' . $mod_string . "\n";
      }
    }
  }
}

I get exactly what I'm looking for, but is there a better way to go about this? It seems klugey.

I'm trying to use this approach on a separate problem where I want to fill an array with a module name and the file it will modify. The problem is that two modules could modify the same file and modules have multiple entries...so the repetition of both types of info prevent using either as an associative array key. My aim is to identify modules which will modify the same file and inform the user, but I'm finding it a bit difficult. Maybe I just can't get my brain around it today...I don't know.

Any suggestions on working with info like this? Array functions like array_intersect or array_diff won't do what I want and I'm banging my head on the table....

 

[DRJ478]

What about writing a recursive function that follows into the existing depth of the array initially passed?

This is not unlike traversing a tree in any kind of multi dimensional branch structure.

 

[shagymoe]

I haven't really written any recursive functions, although I understand the concept, I am new to implementing it on anything other than a trivial problem. Looks like I should give it a deeper look.

I was also thinking that maybe the OO approach would be better, but again I don't instinctively use OO.

Thanks for the suggestion.

Shagy

 

[sleipnir214]

Object-oriented design is not going to make your code any less esthetically pleasing to you. It's just going to move your code to another place.

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