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stanislav dot eckert at vizson dot de
10 years ago
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";
?>

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