base64+gzinflate压缩编码（加密）过的文件通常是以 <? eval(gzinflate(base64_decode( 为头的一个php文件。文中给出了编码和解码的代码。
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文件 并且可写 则进行压缩编码
$contents = file_get_contents($filename);// 判断文件是否已经被编码处理
$pos = strpos($contents,'/*Protected by 草名http://www.crazyi.cnCryptation*/');
if(false === $pos || $pos>100){ // 去除PHP文件注释和空白，减少文件大小
$contents = php_strip_whitespace($filename);
// 去除PHP头部和尾部标识
$headerPos = strpos($contents,'<?php');
$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
$encode = base64_encode(gzdeflate($contents));// 开始编码
$encode = '<?php'." /*Protected by 草名http://www.crazyi.cnCryptation*/\n eval(gzinflate(base64_decode(".$encode.")));\n /*Reverse engineering is illegal and strictly prohibited- (C)草名 Cryptation 2008*/ \n?>";
return file_put_contents($filename,$encode);
}
}
return false;
}
//调用函数
$filename='g:\我的文档\桌面\test.php';
encode_file_contents($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文件 并且可写 则进行压缩编码
$contents = file_get_contents($filename);// 判断文件是否已经被编码处理
$pos = strpos($contents,'/*Protected by 草名http://www.crazyi.cnCryptation*/');
if(false === $pos || $pos>100){ // 去除PHP文件注释和空白，减少文件大小
$contents = php_strip_whitespace($filename);
// 去除PHP头部和尾部标识
$headerPos = strpos($contents,'<?php');
$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
$encode = base64_encode(gzdeflate($contents));// 开始编码
$encode = '<?php'." /*Protected by 草名http://www.crazyi.cnCryptation*/\n eval(gzinflate(base64_decode(".$encode.")));\n /*Reverse engineering is illegal and strictly prohibited- (C)草名 Cryptation 2008*/ \n?>";
return file_put_contents($filename,$encode);
}
}
return false;
}
//调用函数
$filename='g:\我的文档\桌面\test.php';
encode_file_contents($filename);
?>
压缩解码（解密）代码：
[复制此代码]CODE:
<?php
$Code = '这里填写要解密的编码'; // base64编码
$File = 'test.php';//解码后保存的文件
$Temp = base64_decode($Code);
$temp = gzinflate($Temp);
$FP = fopen($File,"w");
fwrite($FP,$temp);
fclose($FP);
echo "解密成功！";
?>
