PHP string literals file...good practice?

I've been trying to create a string literals file for PHP, so I can hold all of my strings in one file.

I was wondering if it was good practice to do something like:

class Literals
{
    const String1 = "Hello";
    const String2 = "World!";
    //... (up开发者_StackOverflow中文版 to 100+ literals)...
}

And then somewhere in my code I could call it like:

$hello = Literals::String1;

Is this good practice?

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It depends on what you're going to do with the strings. If you're going to display them to the user, then sure, it's a simple way of doing internationalization, although you'll want to look at something more advanced if you're going to do a lot of it. If you're just going to use them for associative array keys, database column names or other internal things, then no, just keep them inline.

---

Hopefully you did not really call them String1...StringN :)

If for localization I personally would prefer this one (as used by Apple):

In code use something like:

<h1><?php localize("Homepage","String for the homepage") ?></h1>

.

function localize($key,$help='') {
   //do a lookup of the key and if not found use the key itself
}

Then you can use a parser to find all strings and create a reference translation:

$strings = array(
 /** String for the homepage */
 'Homepage' => 'Homepage'
);

This has the advantage that the main language version will always work and other translations can be added when needed. It's disadvantage is that you need a parser to find all strings.