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POAdding to a parameter for category filtering
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  1. POAdding to a parameter for category filtering
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    copied!<p>Ok so i have a question about PHP, and I don't know if i'm just being stupid or if this is just a lot harder than i thought :/</p> <p>So i'm trying to filter some results down through GET parameter's in the URL. I'm thinking the best way to do this would be similar to what ebuyer.com do.</p> <p>When you filter there search results by different category's the URl is built up like so</p> <pre><code>filtercat=36,134,142,62 etc </code></pre> <p>How are they adding to the parameter whilst keeping the rest of the selected category's?</p> <p>Help!</p> <p><strong>I'm basically trying to create what is on <a href="http://www.ebuyer.com/search?page=1&amp;sort=relevancy&amp;limit=10&amp;q=memory+card&amp;filtercat=48,36" rel="nofollow">this site</a>, on the left sidebar where you can select and deselect filters for your search</strong></p> <p>Many thanks for any replies</p> <p><strong>UPDATE</strong></p> <p>Below is some code but repeated clicking on the link causes multiple occurrences of the same value</p> <p>e.g. categories.php?filtercat=361343636</p> <p>how can I stop this and add commas in between so the output is?</p> <p>e.g. categories.php?filtercat=36,134 etc</p> <pre><code>&lt;?php $filter = $_GET['filtercat']; $pieces = explode(",", $filter); $edit_url = http_build_query( Array( 'filtercat' =&gt; ''.$pieces[0].$pieces[1].$pieces[2].'' ) ); echo($edit_url); ?&gt; </code></pre> <p>Then in my links I have </p> <pre><code>&lt;a href="&lt;?php echo('categories.php?'.$edit_url.'36'); ?&gt;"&gt;36catagory&lt;/a&gt; &lt;a href="&lt;?php echo('categories.php?'.$edit_url.'134'); ?&gt;"&gt;134catagory&lt;/a&gt; </code></pre> <p>The explode does not work though as there are no commas... the whole things a giant mess really and I'm so confused :/ Help!</p>
 

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