launch.php

<?php

$prompt = $_POST['prompt'];
$site = $_POST['site'];

if ( $site == google )
{
header('Location: http://google.com/search?q=' . $prompt . '');
}

elseif 
( $site == appstore )
{
header('Location: http://phobos.apple.com/WebObjects/MZSearch.woa/wa/search?media=software&term=' . $prompt . '');
}

elseif 
( $site == wikipedia )
{
header('Location: http://en.wikipedia.org/wiki/' . $prompt . '');
}

elseif
( $site == yelp )
{
header('Location: yelp4:///search?terms=' . $prompt . '');
}

elseif
( $site == imdb )
{
header('Location: imdb:///find?q=' . $prompt . '');
}

elseif
( $site == phone )
{
header('Location: tel:' . $prompt . '');
}

elseif
( $site == omnifocus )
{
header('Location: omnifocus:///add?name=' . $prompt . '');
}

elseif
( $site == twitter )
{
header('Location: twitter://post?message=' . $prompt . '');
}

?>