3v4l.org

run code in 300+ PHP versions simultaneously

@ 2017-01-26T10:29:33Z

<?php
# http://scribu.net/blog/defaultdict-in-php.html
class Defaultdict implements ArrayAccess {
	private $container = array();
	private $default;
	public function __construct( $default ) {
		$this->default = $default;
	}
	public function offsetSet( $offset, $value ) {
		if ( is_null($offset) ) {
			trigger_error( sprintf( "Trying to use %s as a list.", __CLASS__ ), E_USER_WARNING );
			return;
		}
		$this->container[$offset] = $value;
	}
	public function offsetExists( $offset ) {
		return true;
	}
	public function offsetUnset( $offset ) {
		unset( $this->container[$offset] );
	}
	public function &offsetGet( $offset ) {
		if ( !isset( $this->container[$offset] ) ) {
			if ( is_callable($this->default) )
				$value = call_user_func( $this->default, $offset );
			else
				$value = $this->default;
			$this->container[$offset] = $value;
		}
		return $this->container[$offset];
	}
}
$counts = new Defaultdict(1);
$counts['English']++;
echo $counts['English'];

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: Return type of Defaultdict::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/okK94 on line 16 Deprecated: Return type of & Defaultdict::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/okK94 on line 22 Deprecated: Return type of Defaultdict::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/okK94 on line 9 Deprecated: Return type of Defaultdict::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/okK94 on line 19 2

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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

preferences:dark modelive preview

61.94 ms | 403 KiB | 8 Q