Getting this error for NewRelic module after PHP update from 5.3 to 5.4?
newrelic.so: undefined symbol: php_end_ob_buffer in Unknown on line 0
This mean the module is not compatible with your new PHP version. To resolve this matter, follow these easy steps.
Uninstall NewRelic completely :
yum remove newrelic-daemon newrelic-sysmond newrelic-php5 newrelic-php5-common
Then reinstall :
yum install newrelic-daemon newrelic-sysmond newrelic-php5 newrelic-php5-common
Start NewRelic :
/etc/init.d/newrelic-sysmond start
Reload Apache :
service httpd reload