49 lines
802 B
PHP
49 lines
802 B
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of PicoTools.
|
|
*
|
|
* (c) Frédéric Guillot http://fredericguillot.com
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace PicoTools;
|
|
|
|
|
|
function singleton($name)
|
|
{
|
|
static $instance = array();
|
|
|
|
if (! isset($instance[$name])) {
|
|
|
|
$callback = container($name);
|
|
|
|
if (! is_callable($callback)) {
|
|
|
|
return null;
|
|
}
|
|
|
|
$instance[$name] = $callback();
|
|
}
|
|
|
|
return $instance[$name];
|
|
}
|
|
|
|
|
|
function container($name, $value = null)
|
|
{
|
|
static $container = array();
|
|
|
|
if (null !== $value) {
|
|
|
|
$container[$name] = $value;
|
|
}
|
|
else if (isset($container[$name])) {
|
|
|
|
return $container[$name];
|
|
}
|
|
|
|
return null;
|
|
} |