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<?php $wtf = ['bool' => true, 'int' => 1]; print_r($wtf); var_dump($wtf)
Output for 5.5.0 - 5.5.34, 5.6.0 - 5.6.20, 7.0.0 - 7.0.5
Parse error: syntax error, unexpected end of file in /in/oKoPF on line 5
Process exited with code 255.

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