After not really working with PhP for a long time, I am moving into php 5 territory. One of the things I am now trying to figure out, is how to use spl autoload functionality. And before I make stupid beginners errors, could you please confirm / advice:
As far as I understand, the SPL_autoload does not mean there is no need for includes anymore; I will still need to include the configuration I want to use manually like this:
require_once("includess/php_ini_settings.php");
In the php_ini_settings.php I subsequently can run an autoloader, to load all the php files in a certain directory, such as my classes directory:
// Directory for classes
define('CLASS_DIR', 'classes/');
// Add classes dir to include path
set_include_path(CLASS_DIR);
spl_autoload_extensions(".php"); // comma-separated list
spl_autoload_register();
Is this indeed the right (and most efficient) way to autoload classes into all my pages?
-- added: -- It is mentioned that unless you use a different naming scheme, the is no need to specify an autoloader. I assume the naming scheme default is using the class name as filename, in non-caps?
You don't really need the spl_autoload_extensions()
and spl_autoload_register()
part, unless you use a different naming scheme. So you basically just need to add your class path to the include path, like you already do.
I suggest using SPL_autoload_suxx()
from http://bugs.php.net/49625 as your __autoload()
function though to have more sensible case-sensitivity:
function __autoload($cn) {
$rc = false;
$exts = explode(',', spl_autoload_extensions());
$sep = (substr(PHP_OS, 0, 3) == 'Win') ? ';' : ':';
$paths = explode($sep, ini_get('include_path'));
foreach ($paths as $path) {
foreach ($exts as $ext) {
$file = $path.DIRECTORY_SEPARATOR.$cn.$ext;
if (is_readable($file)) {
require_once $file;
$rc = $file;
break;
}
}
}
return $rc;
}
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