Includes and requires

From Computer Science Wiki
Jump to navigation Jump to search



 when the file is required by your application, e.g. an important message template or a file containing configuration variables without which the app would break.


 when the file contains content that would produce an error on subsequent inclusion, e.g. function important() { /* important code */} is definitely needed in your application but since functions cannot be redeclared should not be included again.


 when the file is not required and application flow should continue when not found, e.g.  great for templates referencing variables from the current scope or something


 optional dependencies that would produce errors on subsequent loading or maybe remote file inclusion that you do not want to happen twice due to the HTTP overhead[1]