PHP base64+gzinflate壓縮編碼和解碼程式碼

base64+gzinflate壓縮編碼（加密）過的檔案通常是以<? eval(gzinflate(base64_decode( 為頭的一個php檔案。文中給出了編碼和解碼的程式碼。
CODE:
<?php
function encode_file_contents($filename) {
$type=strtolower(substr(strrchr($filename,'.'),1));
if('php'==$type && is_file($filename) && is_writable($filename)){// 如果是PHP檔案且可寫則進行壓縮編碼
$contents = file_get_contents($filename);// 判斷檔案是否已被編碼處理
$pos = strpos($contents,'/*Protected by 草名http://www.crazyi.cnCryptation*/' );
if(false === $pos || $pos>100){ // 移除PHP檔案註解和空白，減少檔案大小
$contents = php_strip_whitespace($filename);
// 移除PHP頭部和尾部標識
$headerPos = strpos($contents,'<?php');
$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
$encode = base64_encode(gzdeflate($contents));// 開始編碼
$encode = '<?php'." /*Protected by 草名http://www.crazyi.cnCryptation*/n eval(gzinflate(base64_decode(".$encode.")));n /*Reverse engineering is illegal and strictly prohibited- (C)草名Cryptation 2008*/ n?>";
return file_put_contents($filename,$encode);
}
}
return false;
}
//呼叫函數
$filename='g:我的文件桌面test.php';
encode_file_contents($filename);
?>
<?php
function encode_file_contents($filename) {
$type=strtolower(substr(strrchr($filename,'.'),1));
if('php'==$type && is_file($filename) && is_writable($filename)){// 如果是PHP檔案且可寫則進行壓縮編碼
$contents = file_get_contents($filename);// 判斷檔案是否已被編碼處理
$pos = strpos($contents,'/*Protected by 草名http://www.crazyi.cnCryptation*/' );
if(false === $pos || $pos>100){ // 移除PHP檔案註解和空白，減少檔案大小
$contents = php_strip_whitespace($filename);
// 移除PHP頭部和尾部標識
$headerPos = strpos($contents,'<?php');
$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
$encode = base64_encode(gzdeflate($contents));// 開始編碼
$encode = '<?php'." /*Protected by 草名http://www.crazyi.cnCryptation*/n eval(gzinflate(base64_decode(".$encode.")));n /*Reverse engineering is illegal and strictly prohibited- (C)草名Cryptation 2008*/ n?>";
return file_put_contents($filename,$encode);
}
}
return false;
}
//呼叫函數
$filename='g:我的文件桌面test.php';
encode_file_contents($filename);
?>

壓縮解碼（解密）代碼：
[複製此程式碼]CODE:
<?php
$Code = '這裡填寫要解密的編碼'; // base64編碼
$File = 'test.php';//解碼後儲存的文件
$Temp = base64_decode($Code);
$temp = gzinflate($Temp);
$FP = fopen($File,"w");
fwrite($FP,$temp);
fclose($FP);
echo "解密成功！";
?>