Cloning object based on content in PHP - php

Question

I seem to be going round in circles here but i have a situation where I when reading some objects i may come across some that contain an array. When this happens i wish to produce new objects based upon the array for example
sourceObject(namespace\className)
protected '_var1' => array('value1', 'value2')
protected '_var2' => string 'variable 2'
Should become
childObject1(namespace\className)
protected '_var1' => string 'value1'
protected '_var2' => string 'variable2'
childObject2(namespace\className)
protected '_var1' => string 'value2'
protected '_var2' => string 'variable2'
However due to not quite getting my head around it my clones always end up with the same content (sometimes both are value1 sometimes value2)

Answer 1

You could create a method like the following one:
trait classSplitClone
{
public function splitClone($name)
{
if (!is_array($this->$name)) {
return [$this];
}
$objs = [];
$values = $this->$name;
$c = 0;
foreach ($values as $value) {
$objs[] = $c ? clone $this : $this;
$objs[$c]->$name = $value;
$c++;
}
return $objs;
}
}
and then use it in your class(es) as a trait
class className
{
use classSplitClone;
protected $var1;
protected $var2;
function __construct($var1, $var2)
{
$this->var1 = $var1;
$this->var2 = $var2;
}
}
An example could look like:
$obj = new className(['value1', 'value2'], 'variable 2');
print_r($obj->splitClone('var1'));
Yielding the following results:
Array
(
[0] => className Object
(
[var1:protected] => value1
[var2:protected] => variable 2
)
[1] => className Object
(
[var1:protected] => value2
[var2:protected] => variable 2
)
)
Hope this helps. Alterantively you can access private and protected members also via ReflectionObject.
The full example code (Demo):
<?php
/**
* #link http://stackoverflow.com/a/24110513/367456
*/
/**
* Class classSplitClone
*/
trait classSplitClone
{
public function splitClone($name)
{
if (!is_array($this->$name)) {
return [$this];
}
$objs = [];
$values = $this->$name;
$c = 0;
foreach ($values as $value) {
$objs[] = $c ? clone $this : $this;
$objs[$c]->$name = $value;
$c++;
}
return $objs;
}
}
/**
* Class className
*/
class className
{
use classSplitClone;
protected $var1;
protected $var2;
function __construct($var1, $var2)
{
$this->var1 = $var1;
$this->var2 = $var2;
}
}
/*
* Example
*/
$obj = new className(['value1', 'value2'], 'variable 2');
print_r($obj->splitClone('var1'));