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Issue: After upgrading from php5.6 to php 7.2 website is down .
Upgrading from php 5 to php 7 on centos may require small changes in httpd (apache2) configuration files .
Error could be related to loading php7 module and error may display something like
Starting httpd: httpd: Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/httpd/modules/libphp5.so: cannot open shared object file: No such file or directory
This is because old php.conf is not replaced with new php.conf which should contain LoadModule php7_module modules/libphp7.so
You can rename old php.conf to php.conf.old and php.conf.rpmnew to php.conf
or add the line
LoadModule php7_module modules/libphp7.so line to /etc/httpd/conf.d/php.conf file
<IfModule mod_php5.c> to
if you have ssl.conf