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@ 2016-02-17T13:14:13Z

<?php
	function romToDec ($dec) {
		$return = '';
		
		while ($dec >= 1000) {
			$dec -= 1000;
			$return .= 'M';
		}
		
		if ($dec >= 900) {
			$dec -= 900;
			$return .= 'CM';
		}
		
		if ($dec >= 500) {
			$dec -= 500;
			$return .= 'D';
		}
		
		if ($dec >= 400) {
			$dec -= 400;
			$return .= 'CD';
		}
		
		while ($dec >= 100) {
			$dec -= 100;
			$return .= 'C';
		}
		
		if ($dec >= 90) {
			$dec -= 90;
			$return .= 'XC';
		}
		
		if ($dec >= 50) {
			$dec -= 50;
			$return .= 'L';
		}
		
		if ($dec >= 40) {
			$dec -= 40;
			$return .= 'XL';
		}
		
		while ($dec >= 10) {
			$dec -= 10;
			$return .= 'X';
		}
		
		if ($dec == 9) {
			$dec = 0;
			$return .= 'IX';
		}
		
		if ($dec >= 5) {
			$dec -= 5;
			$return .= 'V';
		}
		
		if ($dec == 4) {
			$dec = 0;
			$return .= 'IV';
		}
		
		while ($dec >= 1) {
			$dec -= 1;
			$return .= 'I';
		}
		
		return $return;
	}
	
	
	
	$tests = array(1, 999, 2016, 23458, 104696);
	foreach ($tests as $test) {
		echo $test.' → '.romToDec($test)."\n";
	}
?>

Output for git.master, git.master_jit, rfc.property-hooks: 1 → I 999 → CMXCIX 2016 → MMXVI 23458 → MMMMMMMMMMMMMMMMMMMMMMMCDLVIII 104696 → MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMDCXCVI

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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