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<?php $func = create_function('$a', 'return;'); var_dump($func); var_dump(urlencode($func));
Output for 7.2.0
Deprecated: Function create_function() is deprecated in /in/hqHjh on line 3 string(9) "lambda_1" string(11) "%00lambda_1"
Output for 5.3.19 - 7.1.10
string(9) "lambda_1" string(11) "%00lambda_1"