Online PHP editor | rfc for e4tsG

@ 2019-10-16T22:56:06Z

<?php

interface One {
  function callme(string $data): void;
}

interface Two {
  function callme(int $data): void;
}

class OneImpl implements One {
  function callme(string $data): void {}
}

class TwoImpl implements Two {
  function callme(int $data): void {}
}

class BothImpl implements One, Two {
  /**
   * @param int|string $data
   */
  function callme($data): void {}
}

/**
 * @param "one"|"two"|"both" $switch
 * @return One|Two
 */
function getEither(string $switch) {
    if ($switch === "one") {
      return new OneImpl();
    }
    if ($switch === "two") {
      return new TwoImpl();
    }
  
  	return new BothImpl();
}

/**
 * @param One|Two $impl
 */
function process($impl): void {
  if ($impl instanceof One && $impl instanceof Two) {
    echo 'both';
  } elseif ($impl instanceof One) {
    echo 'one';
  } elseif ($impl instanceof Two) {
    echo 'two';
  }
}

process(getEither("one"));
process(getEither("two"));
process(getEither("both"));

Output for git.master, git.master_jit, rfc.property-hooks: onetwoboth

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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