0, 'used' => 0, 'unused' => 0];
/**
* Constructor
*/
public function __construct()
{
register_shutdown_function([$this, 'display']);
}
/**
* Retrieve instance
*
* @return Log
*/
public static function getInstance()
{
if (!self::$instance) {
self::$instance = new Log();
}
return self::$instance;
}
/**
* Log object instantiation
*
* @param string $class
* @return void
*/
public function startCreating($class)
{
$this->stats['total']++;
$parent = empty($this->currentItem) ? null : $this->currentItem;
$item = new Item($class, $parent);
if (!$parent) {
$this->roots[] = $item;
}
$this->currentItem = $item;
}
/**
* Log object instantiation
*
* @param mixed $object
* @return void
*/
public function stopCreating($object)
{
$this->currentItem->setHash(spl_object_hash($object));
$this->currentItem = $this->currentItem->getParent();
}
/**
* Monitor object
*
* @param mixed $object
* @return void
*/
public function add($object)
{
$this->stats['total']++;
if ($this->currentItem) {
$item = new Item(get_class($object), $this->currentItem);
$this->currentItem->addChild($item);
} else {
$item = new Item(get_class($object), null);
$this->roots[] = $item;
}
$item->setHash(spl_object_hash($object));
}
/**
* Object was invoked
*
* @param mixed $object
* @return void
*/
public function invoked($object)
{
$this->used[spl_object_hash($object)] = 1;
}
/**
* Display results
*
* @return void
*/
public function display()
{
$this->stats['used'] = count($this->used);
$this->stats['unused'] = $this->stats['total'] - $this->stats['used'];
echo '',
'| ',
"Creation chain (Red items are never used) Total: {$this->stats['total']}\n",
"Used: {$this->stats['used']} Not used: {$this->stats['unused']}",
' |
|---|
',
'',
'| Instance class |
|---|
';
foreach ($this->roots as $root) {
$this->displayItem($root);
}
echo '
';
}
/**
* Display item
*
* @param Item $item
* @param int $level
* @return void
*/
protected function displayItem(Item $item, $level = 0)
{
$colorStyle = isset($this->used[$item->getHash()]) ? '' : ' style="color:red" ';
echo "| " . str_repeat('· ', $level) . $item->getClass()
. ' - ' . $item->getHash() . ' |
';
foreach ($item->getChildren() as $child) {
$this->displayItem($child, $level + 1);
}
}
}