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run code in 150+ php & hhvm versions
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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 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.6
http://www.website.com?p=107
Output for hhvm-3.9.1

Process exited with code 153.