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run code in 200+ php & hhvm versions
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<?php var_dump(sprintf('echo %s', escapeshellarg('/home/hugofonseca/geopredial/54451ea181414.html')));
based on sfjgl
Output for 4.3.0 - 7.1.10
string(54) "echo '/home/hugofonseca/geopredial/54451ea181414.html'"