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run code in 150+ php & hhvm versions
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<?php echo urlencode(http_build_query(array( // rq=0&wid=34&t=1&ss=1366x768&bw=160&winid=29&cttl=4748 'rq' => 0, 'wid' => 34, 't' => 1, 'ss' => '1366x768', 'bw' => 160, 'winid' => 29, 'cttl' => 4748, )));
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
rq%3D0%26wid%3D34%26t%3D1%26ss%3D1366x768%26bw%3D160%26winid%3D29%26cttl%3D4748
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: http_build_query() in /in/Y7N81 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: http_build_query() in /in/Y7N81 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: http_build_query() in /in/Y7N81 on line 2