PHP Tutorial: Developing a Login – Part 1 - Localization




Localization

You might have noticed some of the following constants within the previous methods:

COMPLETE_EMAIL
INVALID_EMAIL
COMPLETE_PASSWORD
INVALID_USER_PASS

Instead of simply embedding our error messages/notifications within our scripts/pages, we define them in some file that functions as our language file – which means the Zulu guy next door can simply edit that file and thereby transform the output into his own language.

The language file will look something like this: 

 
$constants = array(); 
$constants['INVALID_USER_PASS'] = 'Ongeldige gebruiker naam of wagwoord';
$constants['COMPLETE_EMAIL'] = 'Voltooi asseblief die epos veld';
$constants['INVALID_EMAIL'] = 'Ongeldige epos adres';
$constants['COMPLETE_PASSWORD'] = 'Voltooi asseblief die wagwoord veld';
$constants['EMAIL_CAPTION'] = 'Epos adres';
$constants['PASSWORD_CAPTION'] = 'Wagwoord';
$constants['LOGIN_CAPTION'] = 'Teken in';
$constants['LOGOUT_CAPTION'] = 'Teken uit';
$constants['LOGIN_TEXT'] = 'Ingeteken as:';
$constants['LOGOUT_TEXT'] = 'U het suksesvol uit geteken';
$constants['HOME_CAPTION'] = 'Tuis';
require("parse.php");
 

Notice the code block within the parse.php file: 

 
foreach($constants as $key=>$value) {
	if (isset($_GET['js'])) {
		echo 'var '.$key.' = "'.$value.'";'."\n";
	}
	else {
		define($key, $value);
	}
}
 

“if (isset($_GET['js'])) {“ tells the script that we want JavaScript output from this file, which we’ll call like this: 
 
<script type="text/javascript" src="../language/<?php echo LANGUAGE;?>.php?js=1"></script>
 



Posted by - Christoff Truter
Created - 2009-09-05 18:26:47


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