A WordPress plugin required PCRE 8.x for it to work. The following instructions were taken from the source cited below and worked flawlessly.
The step below determined the version of PCRE and whether there was PHP support for it.
[root@server]# pcretest -C
PCRE version 7.8 2008-09-05
Compiled with
UTF-8 support
Unicode properties support
Newline sequence is LF
\R matches all Unicode newlines
Internal link size = 2
POSIX malloc threshold = 10
Default match limit = 10000000
Default recursion depth limit = 10000000
Match recursion uses stack
[root@server]# php -i | grep PCRE
PCRE (Perl Compatible Regular Expressions) Support => enabled
PCRE Library Version => 7.8 2008-09-05
[root@server]# rpm -q --queryformat "%{name}.%{arch}\n" pcre
pcre.x86_64
To install the newer version of PCRE create a link to the repository.
echo '[utter-ramblings] name=Utter Ramblings baseurl=https://yum.jasonlitka.com/EL5/x86_64/ gpgkey=https://yum.jasonlitka.com/RPM-GPG-KEY-jlitka enabled=1 gpgcheck=1' > /etc/yum.repos.d/utter-ramblings.repo
Yum update
[root@server]# yum update pcre Loaded plugins: fastestmirror Setting up Update Process Loading mirror speeds from cached hostfile * base: mirror.rackspace.com * epel: fedora-epel.mirror.lstn.net * extras: repo1.dal.innoscale.net * updates: mirror.raystedman.net utter-ramblings | 2.3 kB 00:00 ... utter-ramblings/primary_db | 112 kB 00:00 Resolving Dependencies --> Running transaction check ---> Package pcre.x86_64 0:7.8-7.el6 will be updated ---> Package pcre.x86_64 0:8.13-1.jason.2 will be an update --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================================================================== Updating: pcre x86_64 8.13-1.jason.2 utter-ramblings 562 k Transaction Summary ====================================================================================================================================================================================================== Upgrade 1 Package(s)
Check the version
[root@sever]# php -i | grep PCRE PCRE (Perl Compatible Regular Expressions) Support => enabled PCRE Library Version => 8.13 2011-08-16
Restart Apache
service httpd restart
Downgrade
To downgrade.
yum downgrade pcre --disablerepo utter-ramblings
Source(s)
https://yum.jasonlitka.com/EL5/x86_64/
