PHP 5.2 with mcrypt extension How do i install mcrypt via yum without updating php as it seems when i ran this command:

# yum install php-mcrypt.x86_64

================================================== =============================================
Package Arch Version Repository Size
================================================== =============================================
Installing:
php-mcrypt x86_64 5.3.6-3.el5.art atomic 47 k
Installing for dependencies:
bzip2-libs i386 1.0.3-6.el5_5 base 37 k
curl i386 7.15.5-9.el5_6.2 updates 233 k
gmp i386 4.1.4-10.el5 base 664 k
keyutils-libs i386 1.2-1.el5 base 18 k
krb5-libs i386 1.6.1-55.el5_6.2 updates 667 k
libedit x86_64 3.0-2.20090923cvs.el5.art atomic 81 k
libidn i386 0.6.5-1.1 base 194 k
libmcrypt x86_64 2.5.8-4.el5.centos extras 105 k
libstdc++ i386 4.1.2-50.el5 base 362 k
libtool-ltdl x86_64 1.5.22-7.el5_4 base 38 k
libxml2 i386 2.6.26-2.1.2.8.el5_5.1 base 795 k
mysql-libs x86_64 5.1.57-3.el5.art atomic 2.1 M
mysqlclient15 x86_64 5.0.90-1.el5.art atomic 1.3 M
openssl i686 0.9.8e-12.el5_5.7 base 1.4 M
php-cli i386 5.2.17-1.el5.art atomic 2.4 M
php-common i386 5.2.17-1.el5.art atomic 279 k
zlib i386 1.2.3-3 base 50 k

Updating for dependencies:
curl x86_64 7.15.5-9.el5_6.2 updates 230 k
exim x86_64 4.63-5.el5_6.2 updates 1.2 M
krb5-libs x86_64 1.6.1-55.el5_6.2 updates 679 k
libstdc++ x86_64 4.1.2-50.el5 base 353 k
mysql x86_64 5.1.57-3.el5.art atomic 4.2 M
mysql-server x86_64 5.1.57-3.el5.art atomic 11 M
openssl x86_64 0.9.8e-12.el5_5.7 base 1.4 M
php-cli x86_64 5.3.6-3.el5.art atomic 2.6 M
php-common x86_64 5.3.6-3.el5.art atomic 972 k
php-gd x86_64 5.3.6-3.el5.art atomic 208 k
php-imap x86_64 5.3.6-3.el5.art atomic 87 k
php-mbstring x86_64 5.3.6-3.el5.art atomic 2.3 M
php-mysql x86_64 5.3.6-3.el5.art atomic 158 k
php-pdo x86_64 5.3.6-3.el5.art atomic 117 k
php-xml x86_64 5.3.6-3.el5.art atomic 221 k
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is my understanding correct that if i continue with the installation then it will update php?
Also i tried using this command

# yum install php-mcrypt.x86_64 --exclude=php

but the same print is shown

thanks in advance