over the past two days, LOTS of php functions quit working, most complaining about certification issues. i found this certification link, and the page had this advice: ======================= Red Hat / Centos On a Red Hat Enterprise Linux 6 system, just add your certificate authority file(s) to the directory /usr/local/share/ca-certificates. For RHEL7 use the directory /etc/pki/ca-trust/source/anchors. On both systems you have to exectue the command/bin/update-ca-trust for update the certificate authority file. ======================= has anybody done this? as i recall certification is mostly easy except for the various administrative issues i always run into.