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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo rawurlencode('http://production.shippingapis.com/ShippingAPITest.dll?API=TrackV2&XML=<TrackRequestUSERID="xxxxxxxxxxxx">    <TrackID ID="EJ958083578US"></TrackID></TrackRequest>');
Output for 4.3.0 - 7.2.0
http%3A%2F%2Fproduction.shippingapis.com%2FShippingAPITest.dll%3FAPI%3DTrackV2%26XML%3D%3CTrackRequestUSERID%3D%22xxxxxxxxxxxx%22%3E%C2%A0%C2%A0%C2%A0%C2%A0%3CTrackID%20ID%3D%22EJ958083578US%22%3E%3C%2FTrackID%3E%3C%2FTrackRequest%3E