PHP IDE :: NuSphere Forums :: View topic - E_COMPILE_ERROR Declaration must be compatible ...

Posted: Fri Feb 01, 2013 3:51 am

I irregulary receive the following error message ... i think generated by the DBG module of php. (It appears sometimes, after maybe some thousand executions, generated by Firefox's "reload every")

http ://www.kwicpix.de/display-i13866bpz7ln.html (plz. remove space after http)

executing the following test script and don't understand why MySecond::serialize() should be compatible with MySerializable::setUnserializedData, which are totally different functions at all. Maybe someone here has an idea?!

TIA Eutychus

Code:

<?php

trait MySerializable {

public function serialize() {
   return serialize($this->getSerializeData());
}

public function unserialize($serialized) {
   $this->setUnserializedData(@unserialize($serialized));
}

/**
* This method should return a data attributes of an object ...
*
* @return array
*/
abstract protected function getSerializeData();

abstract protected function setUnserializedData($data);

}

class MyFirst implements Serializable {

use MySerializable;

protected $firstVar = "hello";
protected $secondVar = "world";
protected $thirdVar = NULL;

public function __construct() {
   $this->thirdVar = new MyThird();
}

protected function getSerializeData() {
   return [
      "firstVar" => $this->firstVar,
      "secondVar" => $this->secondVar,
      "thirdVar" => $this->thirdVar,
   ];
}

protected function setUnserializedData($data) {
   $this->firstVar = $data["firstVar"];
   $this->secondVar = $data["secondVar"];
   $this->thirdVar = $data["thirdVar"];
}

}

class MySecond extends MyFirst {

use MySerializable;

protected $extended = "ext";

protected function getSerializeData() {
   return array_merge(parent::getSerializeData(), [ "extended" => $this->extended ]);
}

protected function setUnserializedData($data) {
   parent::setUnserializedData($data);
   $this->extended = $data["extended"];
}

}

class MyThird implements Serializable {

use MySerializable;

protected $thirdsVar = "BLUE";
protected $thirdsSecondVar = NULL;

protected function getSerializeData() {
   return [
      "thirdsVar" => $this->thirdsVar,
      "thirdsSecondVar" => $this->thirdsSecondVar,
   ];
}

protected function setUnserializedData($data) {
   $this->thirdsVar = $data["thirdsVar"];
   $this->thirdsSecondVar = $data["thirdsSecondVar"];
}

}

session_set_save_handler("__open", "__close", "__read", "__write", "__destroy", "__gc");

function __open() {}

function __close() {}

function __destroy() {}

function __gc() {}

function __read($id) {
return file_get_contents("test.session");
return serialize([
   "first" => new MyFirst(),
   "second" => new MySecond(),
]);
}

function __write($id, $data) {
file_put_contents("test.session", $data);
echo $data."<br />\n";
}

session_name("ts");
session_start();

if ( empty($_SESSION) ) {
$_SESSION["execCounter"] = 0;
$_SESSION["first"] = new MyFirst();
$_SESSION["second"] = new MySecond();
}
$_SESSION["execCounter"]++;

session_write_close();

?>