Install Metinfo encountered problems--Set Column no Save button column is empty cannot add column directory name cannot be duplicate

Although the environment has been checked during metinfo installation, there is no problem. But in the "Settings-columns", there is no content (in fact the site is a sample content), there is no save button.

Later Google knew that this was due to the lack of package dependencies

Yum  Install php-mysql php-gd libjpeg* php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc php-mbstring php-mcrypt Php-bcmath Php-mhash Libmcrypt

After installing the package and restarting the HTTPD service, a new problem has been found

The first three columns are examples of the site, but the new column will have the above hint.

Started to think it was a database problem, because I was not familiar with MySQL, I think that when the new database user and to give permissions to the database user when there is a problem, I have to install the site many times.

Later found that it is as long as the entire root directory to give 777 permission to be good.

That is/var/www/html the following is the Web site file, you need to put the HTML folder to 777 permissions

Install Metinfo encountered problems--Set Column no Save button column is empty cannot add column directory name cannot be duplicate