Hi, Jason,
Thanks a lot for suggestion. Does it mean that I have tried to serialize some object (like adodb db object)? How I can eliminate this? I really cannot find where this object or whatever else is going to be serailized. The problematic line of code just serialized an array.
On Mar 16, 2005, at 18:30, Jason Barnett wrote:
Andrei Verovski wrote: ...Notice: serialize() [function.serialize]: __sleep should return an array
only containing the names of instance-variables to serialize. in
ANVphpApp.php on line 840
Anyone knows what is the problem?
Exactly what the notice says ;) basically __sleep is used so that you can prevent certain properties (file pointers, db connections, objects, etc.) from being serialized.
<?php
session_start(); error_reporting(E_ALL);
class Dummy { public $s1 = 'I am a test string'; protected $s2 = 'I am the protected string'; private $_s3 = 'I am the private string'; var $a1 = array('testing', 1, 2, 3); static $i1 = 0;
function __sleep() { $i = self::$i1++; echo "Oops, I forgot everything! $i\n"; return array(); } }
class hasMemory extends Dummy {
private $_fp = NULL;
function __construct() { $this->_fp = fopen('/path/to/some/file', 'r'); }
function __sleep() { $props_to_save = array('s1', 's2', 'a1'); echo "I know about the following properties:\n"; print_r($props_to_save); return $props_to_save; } }
$_SESSION['obj1'] = new Dummy(); $_SESSION['obj2'] = new hasMemory(); $_SESSION['string'] = '123abcdefg!'; $_SESSION['integer'] = 1; $_SESSION['float'] = .1234; $_SESSION['double'] = .1234567890123456; $_SESSION['bool'] = TRUE;
foreach ($_SESSION as $key => $value) { echo "$key: "; var_dump(serialize($value)); }
?>
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