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run code in 150+ php & hhvm versions
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<?php var_dump(debug_backtrace(defined('DEBUG_BACKTRACE_IGNORE_ARGS') ? DEBUG_BACKTRACE_IGNORE_ARGS : false));
based on e9LJT
Output for 5.2.5 - 7.1.0
array(0) { }
Output for 4.3.0 - 5.2.4
Warning: Wrong parameter count for debug_backtrace() in /in/RLefl on line 2 NULL