note 116329 added to language.oop5.cloning
| From: | stanislav dot eckert at vizson dot de | Date: | Sat, 13 Dec 2014 12:54:01 +0000 |
| Subject: | note 116329 added to language.oop5.cloning | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-201141@lists.php.net to get a copy of this message | ||
This base class automatically clones attributes of type object or array values of type object
recursively. Just inherit your own classes from this base class.
<?php
class clone_base
{
public function __clone()
{
$object_vars = get_object_vars($this);
foreach ($object_vars as $attr_name => $attr_value)
{
if (is_object($this->$attr_name))
{
$this->$attr_name = clone $this->$attr_name;
}
else if (is_array($this->$attr_name))
{
// Note: This copies only one dimension arrays
foreach ($this->$attr_name as &$attr_array_value)
{
if (is_object($attr_array_value))
{
$attr_array_value = clone $attr_array_value;
}
unset($attr_array_value);
}
}
}
}
}
?>
Example:
<?php
class foo extends clone_base
{
public $attr = "Hello";
public $b = null;
public $attr2 = array();
public function __construct()
{
$this->b = new bar("World");
$this->attr2[] = new bar("What's");
$this->attr2[] = new bar("up?");
}
}
class bar extends clone_base
{
public $attr;
public function __construct($attr_value)
{
$this->attr = $attr_value;
}
}
echo "<pre>";
$f1 = new foo();
$f2 = clone $f1;
$f2->attr = "James";
$f2->b->attr = "Bond";
$f2->attr2[0]->attr = "Agent";
$f2->attr2[1]->attr = "007";
echo "f1.attr = " . $f1->attr . "\n";
echo "f1.b.attr = " . $f1->b->attr . "\n";
echo "f1.attr2[0] = " . $f1->attr2[0]->attr . "\n";
echo "f1.attr2[1] = " . $f1->attr2[1]->attr . "\n";
echo "\n";
echo "f2.attr = " . $f2->attr . "\n";
echo "f2.b.attr = " . $f2->b->attr . "\n";
echo "f2.attr2[0] = " . $f2->attr2[0]->attr . "\n";
echo "f2.attr2[1] = " . $f2->attr2[1]->attr . "\n";
?>
----
Server IP: 72.52.91.14
Probable Submitter: 85.179.7.49
----
Manual Page -- http://php.net/manual/en/language.oop5.cloning.php
Edit -- https://master.php.net/note/edit/116329
Del: integrated -- https://master.php.net/note/delete/116329/integrated
Del: useless -- https://master.php.net/note/delete/116329/useless
Del: bad code -- https://master.php.net/note/delete/116329/bad+code
Del: spam -- https://master.php.net/note/delete/116329/spam
Del: non-english -- https://master.php.net/note/delete/116329/non-english
Del: in docs -- https://master.php.net/note/delete/116329/in+docs
Del: other reasons-- https://master.php.net/note/delete/116329
Reject -- https://master.php.net/note/reject/116329
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