XXTEA extension for PHP

Introduction

XXTEA is a fast and secure encryption algorithm. This is a XXTEA extension for PHP.

It is different from the original XXTEA encryption algorithm. It encrypts and decrypts string instead of uint32 array, and the key is also string.

Installation

There are many ways to build the package. Below you can find details for most useful ways of package building:

Way 1: Building the package with PHP

Create ext/xxtea folder in the php-source-folder. Copy all files from the package into created folder.
Run
```
./buildconf
```
to rebuild PHP's configure script.
Compile php with option:

--enable-xxtea to build bundled into PHP module

--enable-xxtea=shared to build dinamycally loadable module

Way 2: Building the package with phpize utility

Unpack contents of the package.
Run
```
phpize
```
script, which will prepare environment for building XXTEA package.
Run
```
./configure --enable-xxtea=shared
```
to generate makefile.
Run
```
make
```
to build XXTEA extension library. It will be placed into ./modules folder.
Run
```
make install
```
to install XXTEA extension library into PHP

Way 3: Install via pecl

Run:
```
 pecl install xxtea
```
That's all.

Usage

<?php
    $str = "Hello World! 你好，**！";
    $key = "1234567890";
    $encrypt_data = xxtea_encrypt($str, $key);
    $decrypt_data = xxtea_decrypt($encrypt_data, $key);
    if ($str == $decrypt_data) {
        echo "success!";
    } else {
        echo "fail!";
    }