ArrayObject::offsetSet
When traversing recursively nested arrays using an RecursiveIteratorIterator, you cannot offsetUnset() or offsetSet() sub-array values, unless they are *all* declared as ArrayObject.
ArrayObject::offsetUnset
(PHP 5 >= 5.0.0)
ArrayObject::offsetUnset — Destrói o elemento no índice especificado
Descrição
Aviso
Esta função não está documentada; somente a lista de argumentos está disponível.
Remove o valor no especificado índice.
Parâmetros
- index
-
O índice a ser desregistrado.
Valor Retornado
Não há valor retornado.
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User Contributed Notes
ArrayObject::offsetUnset
pvenakis at efront dot gr
10-Jan-2008 12:57
oalexandrino at yahoo dot com dot br
28-May-2007 11:11
Be careful when you are working with collections. This method works with the reference of an array instead of its retrieved value.
So, you can do a mistake.
In order to understand have a look at code as follow:
<?php
class Employee
{
public function __construct()
{
}
}
class Company
{
private $arrEmployee;
public function __construct()
{
}
public function AddEmployee(Employee $oEmployee)
{
$this->arrEmployee[] = $oEmployee;
}
public function getEmployeeList()
{
return $this->arrEmployee;
}
}
?>
<?php
// first, creates the Company object
$oCompany = new Company();
// second, add 10 elements in
foreach( range(0, 9) as $index )
{
$oCompany->AddEmployee( new Employee() );
}
// get them
$arrEmployee = $oCompany->getEmployeeList();
// creates an ArrayObject from "$arrEmployee"
$arrayobject = new ArrayObject($arrEmployee);
// unsets its firt five elements
foreach( range(0, 4) as $index )
{
$arrayobject->offsetUnset($index);
}
// get them again
$arrEmployee = $oCompany->getEmployeeList();
// it shows just 5 elements, they were removed as reference via "offsetUnset" method
print_r($arrEmployee) ;
?>