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POBest way of building a collection of unique ID's as well as their counts
 

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  1. POBest way of building a collection of unique ID's as well as their counts
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    <p>I've looked into various different ways of array's, arraylist's, dictionaries... but as I'm used to PHP I'm not entirely sure on the best way I could collect the following information.</p> <p>My program loops through each user, and if their is a location ID, I want to add that to some sort of collection / array. It's expected that different users will have the same location ID.</p> <p>If the location ID is the same, I need to increase an integer of how many occurrence for that location ID.</p> <p>Example:</p> <pre><code>User1 - Location1 User2 - Location3 User3 - Location3 Location1 = 1 Location3 = 2 </code></pre> <p><strong>Also</strong> I need to somehow append each user ID to this collection. So Location3 / 2 occurrences / user2/user3</p> <p>I've been trying to figure out the best way of doing this for about two hours now, and all the different methods of multidimensional arrays, arraylists, dictionaries is all a little confusing as it all seems abstract to my PHP knowledge. I think C# handles arrays in an entirely different way.</p> <p>Essentially, the collection with unique location ID's / occurrences / and users collection needs to be stored in something that can be passed to somewhere else in my program as an argument.</p> <p><strong>I've made a PHP script which does exactly what I'm after</strong></p> <pre><code>foreach($call["data"] as $v) { // Foreach USER ($v containing their unique ID and location ID.) $user_id = $v["id"]; $location_id = $v["location"]["id"]; // This adds the location ID as the key within the array, followed by every user who has it. I don't need a count in this case, as I could just count the number of users. $collection[$location_id][$user_id] = null; } </code></pre> <p>This in return creates this array when printed using print_r</p> <pre><code>[106078429431815] =&gt; Array ( [620790873] =&gt; [626276302] =&gt; [100000152470577] =&gt; ) </code></pre> <p>(Small part of the output). - Added PHP Example. Anyone know how I can get C# to collect the same information in the same way my PHP array does?</p>
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    1. USRobert Collins
    1. USRobert Collins
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    1. COHow about post your php code for easier understading?
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      1. USKen Kin
    2. COworking on a PHP version with summarized outputs that should clarify things.
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      1. USRobert Collins
    3. COadded PHP example with comments.
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      1. USRobert Collins
 

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