We are running a CentOS 5.6 system, and want to install php53 with php-mcrypt.

However, this introduces a dependency conflict between php-common & php53-common. Does anyone have a good workaround for this problem?

host # yum install php-mcrypt
Loaded plugins: fastestmirror
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 * epel: linux.mirrors.es.net
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-mcrypt.x86_64 0:5.1.6-15.el5.centos.1 set to be updated
--> Processing Dependency: php-api = 20041225 for package: php-mcrypt
--> Processing Dependency: php >= 5.1.6 for package: php-mcrypt
--> Running transaction check
---> Package php.x86_64 0:5.1.6-27.el5_5.3 set to be updated
--> Processing Dependency: php-cli = 5.1.6-27.el5_5.3 for package: php
---> Package php-common.x86_64 0:5.1.6-27.el5_5.3 set to be updated
--> Running transaction check
---> Package php-cli.x86_64 0:5.1.6-27.el5_5.3 set to be updated
--> Processing Conflict: php53-common conflicts php-common
--> Finished Dependency Resolution
php53-common-5.3.3-1.el5_6.1.x86_64 from installed has depsolving problems
  --> php53-common conflicts with php-common
Error: php53-common conflicts with php-common
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest

This is apparently a known problem (See php-devel, Bug 700179 and Bug 695708) and this post at the CentOS forums, but there is no official fix yet.

3 Answers 3


Work-around: Use iuscommunity ( http://iuscommunity.org/ ) and install php53u-mcrypt.

In general, you will install packages with named of the form php53u-foo.

  • 2
    We're going with this workaround for now, but I am hoping to use the RHEL/CentOS packages for simplicity. I am hoping that someone else has come up with a clean solution for this, because this problem affects many php-* packages. Jun 2, 2011 at 23:41

IT is very late but as I came via a search other people might find the following helpful. Had the same trouble described above. Problem was that I tried to run

yum install php-gd

this threw the error above

yum install php53-gd 

did not as this belongs to installed php package's installed.

you could find all available packages via

yum search php53



safer to uninstall php and all php-xxx package before installing php53

  • Are you saying that if I install php-xxx first, before installing php53 (this is the reverse of how we did it at first), then the conflict will be avoided? Jun 7, 2011 at 19:17
  • Actually I am using IUS too, sorry for not mentioning earlier. Anyway, I cleaned up all installed php-xxx package before installing any php53u-xxx and it worked just fined.
    – lenzai
    Jun 7, 2011 at 19:28

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