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run code in 200+ php & hhvm versions
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<?php echo base64_decode('ClVLIh4ASCsCBE8lAxMacFMZV2hdVVotEhhUJQNVAmhSEV4sFxFeaAw%3D'); ?>
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
UK"H+O%pSWh]UZ-T%UhR^,^h 7