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copied!<p>In my opinion, to get the most value out of <code>Set::extract</code>, it would be better to start with an array with a structure more like the following (otherwise I believe you'd have to run <code>Set::extract</code> inside a loop):</p> <pre><code>$array = array( 'Shipping' => array( array ( "id" => 4, "rate" => 82.50, "pounds" => 2, "ounces" => 3, "mailtype" => "Package", "country" => "UNITED KINGDOM (GREAT BRITAIN)", "svccommitments" => "1 - 3 business days", "svcdescription" => "Global Express Guaranteed (GXG)", "maxdimensions" => 'Max. length 46", width 35", height 46" and max. length plus girth combined 108"', "maxweight" => 30 ), array ( "id" => 6, "rate" => 82.50, "pounds" => 2, "ounces" => 3, "mailtype" => "Package", "country" => "UNITED KINGDOM (GREAT BRITAIN)", "svccommitments" => "1 - 3 business days", "svcdescription" => "Global Express Guaranteed Non-Document Rectangular", "maxdimensions" => 'Max. length 46", width 35", height 46" and max. length plus girth combined 108"', "maxweight" => 70 ) ) ); </code></pre> <p>Now you can use the path syntax for <code>Set::extract()</code> to extract elements that have a maxweight greater than <code>$x</code>.</p> <pre><code>$extracted = Set::extract($array, '/Shipping[maxweight>'.$x.']'); </code></pre> <p>With this data, you can build the array you're looking for using the rates as keys and svcdescription as values using <code>Set::combine()</code>.</p> <pre><code>$combined = Set::combine($extracted, '{n}.Shipping.rate', '{n}.Shipping.svcdescription'); </code></pre>

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