- Output for git.master, git.master_jit, rfc.property-hooks
- Warning: Undefined array key "qux" in /in/fvItX on line 12 type | if | empty | is_null | == null | == "" | === "" | ! | -----------------------------+---------+---------+---------+---------+---------+---------+---------+- string(empty) "" | | TRUE | | TRUE | TRUE | TRUE | TRUE | string(space) " " | TRUE | | | | | | | bool(false) | | TRUE | | TRUE | TRUE | | TRUE | bool(true) | TRUE | | | | | | | array(empty) {} | | TRUE | | TRUE | | | TRUE | array(1) { ["empty_item"] } | | TRUE | TRUE | TRUE | TRUE | | TRUE | NULL | | TRUE | TRUE | TRUE | TRUE | | TRUE | string("zero") "0" | | TRUE | | | | | TRUE | int(0) | | TRUE | | TRUE | | | TRUE | float(0.0) | | TRUE | | TRUE | | | TRUE | object(stdClass)# (empty) {} | TRUE | | | | | | | public $bar; (unassigned) | | TRUE | TRUE | TRUE | TRUE | | TRUE | string(null byte) "\0" | TRUE | | | | | | | # Note: `!isset()`, `is_null()` and `=== null` are functionaly equivalent. `!` and `empty()` are functionaly equivalent.
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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- 2016-08-14 Arrow functions - withdrawn
- 2016-05-29 array_change_keys() - withdrawn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- 2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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- 2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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