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<?php $url = "http://www.website.com?&p=107"; $url = str_replace("&p", "p", $url); echo $url; // will return http://www.website.com?p=107 ?>
Output for 4.3.0 - 5.6.3, php7@20140507 - 20141101, hhvm-3.0.1 - 3.4.0
http://www.website.com?p=107