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run code in 200+ php & hhvm versions
Bugs & Features
<?php $retrieveSlug = true; var_dump('country'.$retrieveSlug ?? '_slug');
Output for 7.0.0 - 7.2.0
string(8) "country1"
Output for 5.3.18 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/uQNY3 on line 4
Process exited with code 255.