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POSort strings that also contain some integers
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  1. POSort strings that also contain some integers
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    copied!<p>Using <code>usort()</code>, is it possible to sort strings that also contain integer values?</p> <p>For example, take this array of objects containing email addresses (and other data) -</p> <pre><code>$invitees = Array( [0] =&gt; Array( 'email' =&gt; 'test11@testing.com' ), [1] =&gt; Array( 'email' =&gt; 'test2@testing.com' ), [2] =&gt; Array( 'email' =&gt; 'test1@testing.com' ) ); </code></pre> <p>Using the following code compares the array elements as just a simple string -</p> <pre><code>/** Sort the data (if the sort key is defined) */ if(!empty($_REQUEST['orderby'])) : usort($emails, array(&amp;$this, '_order_callback')); endif; function _order_callback($item_a, $item_b){ /** Grab 'orderby', which must have been set for this function to be called */ $orderby = $_REQUEST['orderby']; /** If no 'order' is not set, default to ASC */ $order = (!empty($_REQUEST['order'])) ? $_REQUEST['order'] : 'ASC'; $result = strcmp($item_a[$orderby], $item_b[$orderby]); return (strtoupper($order) === 'ASC') ? $result : -$result; //Send final sort direction to usort } </code></pre> <p>The results are delivered in the following order -</p> <pre><code>[0] - 'test11@testing.com' [2] - 'test1@testing.com' [1] - 'test2@testing.com' </code></pre> <p>Where as I desire this order -</p> <pre><code>[2] - 'test1@testing.com' [1] - 'test2@testing.com' [0] - 'test11@testing.com' </code></pre> <p>Is this possible with <code>usort()</code>? Thanks.</p> <hr> <h2>Edit</h2> <p>Now that I know of the existence of <code>natsort()</code> (thanks to the below comments/answers), I was able to find and try this -</p> <pre><code>$result = ($item_a[$orderby] &gt; $item_b[$orderby] ? 1 : ($item_a[$orderby] &lt; $item_b[$orderby] ? -1 : 0)); </code></pre> <p>I added that comparison to my <code>_order_callback()</code> function (if <code>$orderby === email</code>), and it's close, but sorts in the order <code>11, 12, 13, 14, 1, 2, 3, 4</code>.</p>
 

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