Description of problem:

From repoclosure:

> package: php-eaccelerator - 1:0.9.5.2-1.el5.x86_64 from epel5-testing
>   unresolved deps: 
>      php(zend-abi) = 0:%{php_zend_api}
>      php(api) = 0:%{php_core_api}
> package: php-pecl-memcache - 2.1.2-1.el5.x86_64 from epel5-testing
>   unresolved deps: 
>      php-api = 0:%{php_apiver}

Looks to me like you use the virtual php provides which are not provided by the
php package from RHEL