启动apache2服务时出错:未定义版本OPENSSL_1.0.1

I'm using a Debian Wheezy server where I have installed apache2, php5 and libapache2-mod-php5 packages via apt-get. But when I'm trying to start the apache2 the follow error occurs:

service apache2 start

[....] Starting web server: apache2apache2: Syntax error on line 244 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/php5.load: Cannot load /usr/lib/apache2/modules/libphp5.so into server: /usr/lib/apache2/modules/libphp5.so: symbol TLSv1_1_server_method, version OPENSSL_1.0.1 not defined in file libssl.so.1.0.0 with link time reference
Action 'start' failed.
The Apache error log may have more information.
 failed!

The apache2 service starts successfuly when I disable the php5 service.

I have just reinstall the libssl1.0.0 and openssl apt-get packages, but that problem still persists.