Doc #81038 [NEW]: the variance and traits
From: sh-ya at ya dot ru
Operating system:
PHP version: 7.4.19
Package: Documentation problem
Bug Type: Documentation Problem
Bug description:the variance and traits
Description:
------------
using the variance requires pre-definition of classes that use traits
Test script:
---------------
interface Animal {
public function eat(AnimalFood $food);
}
class Dog implements Animal {
public function eat(Food $food) {}
}
trait SomeTrait {
public $b = true;
}
class Food {
use SomeTrait;
public $i = 0;
}
class AnimalFood extends Food {}
var_dump(new AnimalFood);
Expected result:
----------------
object(AnimalFood)#1 (2) {
["i"]=>
int(0)
["b"]=>
bool(true)
}
Actual result:
--------------
Fatal error: Could not check compatibility between Dog::eat(Food $food)
and Animal::eat(AnimalFood $food), because class AnimalFood is not
available in ...
--
Edit bug report at https://bugs.php.net/bug.php?id=81038&edit=1
--
Fix committed: https://bugs.php.net/fix.php?id=81038&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=81038&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=81038&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=81038&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=81038&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=81038&r=support
Expected behavior: https://bugs.php.net/fix.php?id=81038&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=81038&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=81038&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=81038&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=81038&r=phptooold
Daylight Savings: https://bugs.php.net/fix.php?id=81038&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=81038&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=81038&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=81038&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=81038&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=81038&r=mysqlcfg
Thread (9 messages)
- sh-ya at ya dot ru