title: Can't install Couchbase PHP client library v.1.1.1 to CentOS 5.6
body: <p>I have two servers dev and production, they are pretty simillar. Both have</p>
  
  <pre><code>CentOS 5.6
  PHP 5.2.17
  </code></pre>
  
  <p>Here is installed list: </p>
  
  <pre><code>yum list installed | egrep 'couch|php|mem'
  couchbase-server.x86_64                  1.8.0r-1                      installed
  libcouchbase-devel.x86_64                2.0.1-1                       installed
  libcouchbase1.x86_64                     1.0.1-1                       installed
  libcouchbase2.x86_64                     2.0.1-1                       installed
  libcouchbase2-core.x86_64                2.0.1-1                       installed
  libcouchbase2-libev.x86_64               2.0.1-1                       installed
  libmemcached.x86_64                      1.0.4-3.el5                   installed
  memcached.x86_64                         1.4.10-1.el5                  installed
  php.x86_64                               5.2.17-7.el5                  installed
  php-cli.x86_64                           5.2.17-7.el5                  installed
  php-common.x86_64                        5.2.17-7.el5                  installed
  php-devel.x86_64                         5.2.17-7.el5                  installed
  php-eaccelerator.x86_64                  2:0.9.6.1-1.el5               installed
  php-fpm.x86_64                           5.2.17-7.el5                  installed
  php-mcrypt.x86_64                        5.2.17-7.el5                  installed
  php-mysql.x86_64                         5.2.17-7.el5                  installed
  php-odbc.x86_64                          5.2.17-7.el5                  installed
  php-pdo.x86_64                           5.2.17-7.el5                  installed
  php-pear.noarch                          1:1.9.1-1.el5                 installed
  php-pecl-memcache.x86_64                 3.0.6-1.el5                   installed
  php-pecl-xdebug.x86_64                   2.1.2-1.el5                   installed
  php-xml.x86_64                           5.2.17-7.el5                  installed
  </code></pre>
  
  <p>But i got problem with installing Couchbase PHP client library v.1.1.1 to production server. On dev i installed it and it working normally. But on production server i got this:</p>
  
  <pre><code>PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/couchbase.so' - /usr/lib64/php/modules/couchbase.so: undefined symbol: php_json_encode in Unknown on line 0
  </code></pre>
  
  <p>I already had such errors and know that problem can be in priority of loading php modules.
  So i set loading couchbase.so right after json.so in json.ini file. But the problem remained. </p>
  
  <p>Guys from Couchbase say to update php to version 5.3, but i can't do this because some soft that we use can't work with php 5.3 normally.</p>
  
  <p>Does anyone have some ideas, how this can be fixed?</p>