在大规模建设时使用define（），Pros？ 缺点？

Question

I mass produce very similar sites, meaning they all use the same basic components, pages and are all single industry specific. These are my low end deeply discounted site designs. None of these sites ever get more than 20-30 visitors a day, so any extra load on the server isn't an issue.

In the interest of time, being that they all use the same components, though they may be in different locations or in a different order I would like to write one definition file that can be included with every site, so I can just call the defined constant instead of writing out the code a couple hundred times every year on every site I build. Also for editing later purposes this would make my life MUCH easier.

the definition file would look similar to the following:

define('UPCONTACT','<h1>Contact Us</h1>');
define('ULCONTACT','<a href="contact_us.php">Contact Us</a>');
define('UPABOUTUS','<h1>About Us</h1>');
define('ULABOUTUS','<a href="about_us.php">About Us</a>');

Obviously this is a very basic example but I think you get the idea.

So the question is what are the pros and cons of using define() in this manner?

Answer 1

It's pretty much ok. The disadvantage is that, given you are using constants, you can't override them for a single page or site.

Use an array instead:

config.php

 return array(
     'aboutus' => '<h1>About Us</h1>',
     'contactus' => '<a href="contact_us.php">Contact Us</a>'
 );

include it like this in your site:

$config = include('config.php');

Then you can print it very easily

<?php echo $config['aboutus'] ?>

You can also change a value when you need it:

$config = include('config.php');
$config['aboutus'] = '<h1>About My Company</h1>';

This is probably your best option.