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@ 2018-07-17T18:57:12Z

<?php

class Shipping {
    
    private $company;
    
    function __construct(){
        $this->company = "";
    }
    
    function setStrategy($company){
        
        $this->company = $company;
        
    }
    
    function calculate (Package $package){
        
        return $this->company->calculate($package);
    }
}
interface Company {
    public function calculate();
}
class UPS implements Company{
    
    public function calculate($package){
        
        return 45 * $package->weight;
    }
    
}
class USPS implements Company{
    
    public function calculate(Package $package){
        
        return 30 * $package->weight;
    }
}
class FedEx implements Company {
    
    public function calculate(Package $package){
        
        return 60 * $package->weight;
    }
}
class Package {
    
    public $weight;
    
    function __construct($weight){
        $this->weight = $weight;
    }
}

$package = new Package(30);
$shipping = new Shipping();
$shiping->setStrategy(new UPS());
echo $shipping->calculate($package);

Output for git.master_jit, git.master, rfc.property-hooks: Fatal error: Declaration of UPS::calculate($package) must be compatible with Company::calculate() in /in/cHAPU on line 27
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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