Online PHP editor | rfc for QBTd1

@ 2023-11-05T16:36:13Z

<?php

// returns true if property is safely accessible publicly by using $obj->$prop:
function public_property_exists( $obj, $prop ){
  // allow magic $obj->__isset( $prop ) to execute if exists
  if( isset( $obj->$prop ))  return true;
  
  // no public/protected/private property exists with this name
  if( ! property_exists( $obj, $prop ))  return false;

  // the property exists, but is it public?
  $rp = new ReflectionProperty( $obj, $prop );
  return $rp->isPublic();
}

class C {
  public    $public    = "I’m public!";
  protected $protected = "I’m public!";
  private   $private   = "I’m public!";
  function __isset( $k ){
    return substr( $k, 0, 5 ) === 'magic';
  }
  function __get( $k ){
    if( $k === 'magic_isset_but_null')  return null;
    return "I’m {$k}!";
  }
}

$o = new C();
foreach( array(
  'public', 'protected', 'private',
  'magic', 'magic_isset_but_null',
  'missing'
) as $prop ){
  if( public_property_exists( $o, $prop ))
        echo "\$o->{$prop} is a public property, its value is: ",
             var_export( $o->$prop, true ), "\n";
  else  echo "\$o->{$prop} is not a public property.\n";
}

Output for git.master_jit, git.master, rfc.property-hooks: $o->public is a public property, its value is: 'I’m public!' $o->protected is not a public property. $o->private is not a public property. $o->magic is a public property, its value is: 'I’m magic!' $o->magic_isset_but_null is a public property, its value is: NULL $o->missing is not a public property.

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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