PHP base64+gzinflate compression encoding and decoding code_PHP tutorial

function encode_file_contents($filename) {
$type=strtolower(substr(strrchr($filename,'.'),1));
if('php'==$type && is_file($ filename) && is_writable($filename)){// If it is a PHP file and can be written, compress and encode it
$contents = file_get_contents($filename);// Determine whether the file has been encoded
$pos = strpos($contents,'/*Protected by 草名http://www.crazyi.cn Cryptation*/');
if(false === $pos || $pos>100){ // Remove PHP File comments and whitespace to reduce file size
$contents = php_strip_whitespace($filename);
// Remove PHP header and tail identifiers
$headerPos = strpos($contents,'$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$footerPos-$headerPos);
$encode = base64_encode( gzdeflate($contents));//Start encoding
$encode = '";
return file_put_contents($filename,$encode);
}
}
return false;
}
//Call function
$filename='g:My Document Desktop test.php';
encode_file_contents($filename) ;
?>
function encode_file_contents($filename) {
$type=strtolower(substr(strrchr($filename,'.'),1));
if('php'==$type && is_file($filename) && is_writable($filename)){// If it is a PHP file and it is writable, it will be compressed and encoded
$contents = file_get_contents($filename);/ / Determine whether the file has been encoded
$pos = strpos($contents,'/*Protected by 草名 http://www.crazyi.cn Cryptation*/');
if(false === $pos || $pos>100){ // Remove PHP file comments and whitespace, reduce file size
$contents = php_strip_whitespace($filename);
// Remove PHP header and tail identifiers
$ headerPos = strpos($contents,'$footerPos = strrpos($contents,'?>');
$contents = substr($contents,$headerPos+5,$ footerPos-$headerPos);
$encode = base64_encode(gzdeflate($contents));//Start encoding
$encode = '";
return file_put_contents($filename,$encode);
}
}
return false;
}
//Call function
$filename='g:my document Desktop test.php';
encode_file_contents($filename);
?>


Compression decoding (decryption) code: