note 75412 added to function.ArrayObject-offsetUnset

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) ; ?> ---- Server IP: 200.185.126.110 Probable Submitter: 200.199.23.121 ---- Manual Page -- http://www.php.net/manual/en/function.ArrayObject-offsetUnset.php Edit -- https://master.php.net/note/edit/75412 Del: integrated -- https://master.php.net/note/delete/75412/integrated Del: useless -- https://master.php.net/note/delete/75412/useless Del: bad code -- https://master.php.net/note/delete/75412/bad+code Del: spam -- https://master.php.net/note/delete/75412/spam Del: non-english -- https://master.php.net/note/delete/75412/non-english Del: in docs -- https://master.php.net/note/delete/75412/in+docs Del: other reasons-- https://master.php.net/note/delete/75412 Reject -- https://master.php.net/note/reject/75412 Search -- https://master.php.net/manage/user-notes.php