一:Mcrypt简介 Mcrypt是PHP的一个扩展,完成了常用加密算法的封装。其实该扩展是对mcrypt标准类库的封装,mcrypt完成了相当多的常用加密算法,如DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 和 GOST加密算法,
一:Mcrypt简介
Mcrypt是PHP的一个扩展,完成了常用加密算法的封装。其实该扩展是对mcrypt标准类库的封装,mcrypt完成了相当多的常用加密算法,如DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 和 GOST加密算法,并且提供了CBC、OFB、CFB 和 ECB 四种块加密的模型。
二:安装libmcrypt依赖库
要使用该扩展,必须首先安装mcrypt标准类库,注意的是mcrypt软件依赖libmcrypt和mhash两个库。
1.下载Libmcrypt,mhash,mcrypt安装包
Libmcrypt(libmcrypt-2.5.8.tar.gz):http://sourceforge.net/project/showfiles.php?group_id=87941&package_id=91774&release_id=487459
mcrypt(mcrypt-2.6.8.tar.gz ):http://sourceforge.net/project/showfiles.php?group_id=87941&package_id=91948&release_id=642101
mhash(mhash-0.9.9.9.tar.gz):http://sourceforge.net/project/showfiles.php?group_id=4286&package_id=4300&release_id=645636
2.先安装Libmcrypt
#tar -zxvf libmcrypt-2.5.8.tar.gz
#cd libmcrypt-2.5.8
#./configure
#make
#make install
说明:libmcript默认安装在/usr/local
安装完后重启机器
3.再安装mhash
#tar -zxvf mhash-0.9.9.9.tar.gz
#cd mhash-0.9.9.9
#./configure
#make
#make install
4.最后安装mcrypt
#tar -zxvf mcrypt-2.6.8.tar.gz
#cd mcrypt-2.6.8
#LD_LIBRARY_PATH=/usr/local/lib ./configure
#make
#make install
说明:由于在配置Mcrypt时,会找不到libmcrypt的链接库,导致无法编译,因为Libmcrypt的链接库在/usr/local/lib文件夹下。
因次,在配置mcrypt时要加入LD_LIBRARY_PATH=/usr/local/lib导入键接库。
三.安装PHP的Pecl扩展mcrypt
注意mcrypt是PHP自带的Pecl扩展,所以只要去PHP的解压缩目录去找mcrypt包即可。
这一点区别于PHP安装第三方扩展,参考PHP安装与使用VLD查看opcode代码【PHP安装第三方扩展的方法】
1.动态加载
使用php的常见问题是:编译php时忘记添加某扩展,后来想添加扩展,但是因为安装php后又装了一些东西如PEAR等,不想重装整个PHP,于是可以采用动态编译,使用phpize。需要注意的是要有与现有php完全相同的php压缩包。
#cd /usr/php-5.4.8/ext/mcrypt
#/usr/local/webserver/php/bin/phpize
#./configure --with-php-config=/usr/local/webserver/php/bin/php-config
#make && make install
给你的php.ini添加一条extension=mcrypt.so
重启apache
# /usr/local/apache2/bin/apachectl restart
查看phpinfo(),mcrypt以及安装好
安装完成
--------------------------
2.静态编译
在任意PHP文件中加入函数 phpinfo(),即可取得目前PHP的配置
在这些配置后面新增需要加入的配置:--with-mcrypt --with-mhash
然后进入php源代码目录make clean(一定需要) ,然后执行这条完整的configure命令,依次
make
make install
./configure --with-apxs2=/usr/local/web/apache/bin/apxs --with-mcrypt --with-mhash
//./configure --with-apxs2=/usr/local/web/apache/bin/apxs --with-mcrypt --with-mhash --with-libxml-dir --enable-bcmath --enable-sockets

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