I am new to the composer, I have a VPS with several domains hosted. The VPS is the CentOS. Now I need to install the composer in order to meet several PHP systems' requirement. Now I have several questions about the installation.
1st, I have several systems, should I need to install several composers for each?
2nd, I have the root account to VPS and also have several cPanel accounts on it, owner and group are different to different cPanel accounts, when I install the composer, should I need to log in with different accounts and install it or only install by root?
3rd, where should I place the composer, any specific folder or the folder directly under the PHP system?
Hope someone can help to answer the above questions.