Let's say I've got two files class.php and page.php
class.php
<?php class IUarts { function __construct() { $this->data = get_data('mydata'); } } ?> That's a very rudamentary example, but let's say I want to use:
$vars = new IUarts(); print($vars->data); in my page.php file; how do I go about doing that? If I do include(LIB.'/class.php'); it yells at me and gives me Fatal error: Cannot redeclare class IUarts in /dir/class.php on line 4
You can use include/include_once or require/require_once
require_once('class.php'); Alternatively, use autoloading by adding to page.php
<?php function my_autoloader($class) { include 'classes/' . $class . '.class.php'; } spl_autoload_register('my_autoloader'); $vars = new IUarts(); print($vars->data); ?> It also works adding that __autoload function in a lib that you include on every file like utils.php.
There is also this post that has a nice and different approach.
In this case, it appears that you've already included the file somewhere. But for class files, you should really "include" them using require_once to avoid that sort of thing; it won't include the file if it already has been. (And you should usually use require[_once], not include[_once], the difference being that require will cause a fatal error if the file doesn't exist, instead of just issuing a warning.)
Use include_once instead.
This error means that you have already included this file.
include_once(LIB.'/class.php');
use
require_once(__DIR__.'/_path/_of/_filename.php'); This will also help in importing files in from different folders. Try extends method to inherit the classes in that file and reuse the functions
Use include("class.classname.php");
And class should use <?php //code ?> not <? //code ?>
<? ?> is just newer syntax, I believe it can be enabled or disable in the php.ini. (Sorry to resurrect this)