Problems installing pecl extension for 2 PHP

Question

PHP

Trying to install pecl mongo extension but I have 2 versions php
php -v
PHP 5.4.9
php5 -v
PHP 5.3.3
The server is running php5 and pecl builds the extension for php 5.4.9. I install pecl install mongo like this, everything is ok, but mongo.so is thrown into the extension exactly php 5.4.9.
I tried to copy for php5, an error occurs when loading

undefined symbol: zend_new_interned_string in Unknown on line 0

which most likely indicates that the extension is not built for version 5.3.3
debian 6
need help ;-)

Answer 1

How did you install two versions of PHP?
The pecl5 binary, for an hour, is not there next to the php5 binary?

Answer 2

Were already installed on the server php and php5. I just updated php but it is not used, php5 for apache and cli is used.
to /usr/bin
from packages only
pecl
php5
/usr/local/bin/php-config

prefix="/usr/local"
datarootdir="/usr/local/php"
exec_prefix="${prefix}"
version="5.4.9"
vernum="50409"
include_dir="${prefix}/include/php"

/usr/bin/php-config5

prefix="/usr"
exec_prefix="${prefix}"
version="5.3.3-7+squeeze19"
vernum="50303"
include_dir="${prefix}/include/php5"

wget pecl.php.net/get/mongo-1.5.2.tgz
tar -zxvf mongo-1.5.2.tgz
cd mongo-1.5.2/
phpize5
./configure --with-php-config=/usr/bin/ php-config5
make install