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POArray, need to sort via Keys
 

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    <p>Ok, not really sure how to do this. I have values that are being outputted from a SQL query like so:</p> <pre><code>$row[0] = array('lid' =&gt; 1, 'llayout' =&gt; 1, 'lposition' =&gt; 1, 'mid' =&gt; 1, 'mlayout' =&gt; 1, 'mposition' =&gt; 0); $row[1] = array('lid' =&gt; 2, 'llayout' =&gt; 1, 'lposition' =&gt; 0, 'mid' =&gt; 2, 'mlayout' =&gt; 1, 'mposition' =&gt; 0); $row[2] = array('lid' =&gt; 2, 'llayout' =&gt; 1, 'lposition' =&gt; 0, 'mid' =&gt; 3, 'mlayout' =&gt; 1, 'mposition' =&gt; 1); $row[3] = array('lid' =&gt; 3, 'llayout' =&gt; 1, 'lposition' =&gt; 1, 'mid' =&gt; 4, 'mlayout' =&gt; 1, 'mposition' =&gt; 1); $row[4] = array('lid' =&gt; 4, 'llayout' =&gt; 1, 'lposition' =&gt; 2, 'mid' =&gt; 5, 'mlayout' =&gt; 1, 'mposition' =&gt; 0); </code></pre> <p>etc. etc.</p> <p>Ok, so the best thing I can think of for this is to give lid and mid array keys and have it equal the mposition into an array within the while loop of query like so...</p> <pre><code>$old[$row['lid']][$row['mid']] = $mposition; </code></pre> <p>Now if I do this, I need to compare this array's keys with another array that I'll need to build based on a $_POST array[].</p> <pre><code>$new = array(); foreach($_POST as $id =&gt; $data) { // $id = column, but we still need to get each rows position... $id = str_replace('col_', '', $id); // now get the inner array... foreach($data as $pos =&gt; $idpos) $new[$id][$idpos] = $pos; } </code></pre> <p>Ok, so now I have 2 arrays of info, 1 from the database ($old), and another from the $_POST positions ($new), I hope I got the array keys correct.</p> <p>Now I need to figure out which one's changed, comparing from the old to the new. And also, need to update the database with all of the new positions where new lid = the old lid, and the new mid = the old mid from each array. I'm sure I'll have to use array_key or array_key_intersect somehow, but not sure exactly how...??? </p> <p>Also, I don't think an UPDATE would be useful in a foreach loop, perhaps there's a way to do a CASE statement in the UPDATE query?</p> <p>Also, Am I going about this the right way? OR should I do it another way instead of using a muli-dimensional array for this.</p> <p>Basically I need to update in the database where each array within the same keys = changed value and I need to update it where mid = mid in the database (the second key value).</p> <p>Also, I think it would kinda be like this:</p> <pre><code>$newest = array(); foreach($old as $c =&gt; $d) { foreach($d as $e =&gt; $f) $newest[$c][$e] = $new[$c][$e]; } </code></pre> <p>But isn't there a better way to do this with 1 or 2 php array functions? And I still also need to know which values have changed.... arggg</p>
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