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run code in 150+ php & hhvm versions
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<?php echo urlencode('GFL/R&D/50/67289');
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
GFL%2FR%26D%2F50%2F67289
Output for hhvm-3.10.0

Process exited with code 153.