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<?php $cc = array('a' = 2, 'b' = 43, 'a c d' = 15); extract($cc); print_r(array_keys(get_defined_vars()));
Output for 5.3.0 - 5.3.16, 5.4.0 - 5.4.6
Parse error: syntax error, unexpected '=', expecting ')' in /in/GWkGX on line 2
Process exited with code 255.

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