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@ 2015-04-09T07:55:30Z

<?php

if (class_exists('DateTimeImmutable')) {

    function compareDate(DateTimeImmutable $d1, DateTimeImmutable $d2)
    {
        if ($d1 > $d2) {
            return 1;
        }
    
        if ($d2 > $d1) {
            return -1;
        }
    
        $utc = new DateTimeZone("UTC");
    
        $d1micro = $d1->setTimeZone($utc)->format('u');
        $d2micro = $d2->setTimeZone($utc)->format('u');
        
        echo '$d1 micro = ', $d1micro, PHP_EOL;
        echo '$d2 micro = ', $d2micro, PHP_EOL;
        
        if ($d1micro > $d2micro) {
            return 1;
        }
    
        if ($d1micro < $d2micro) {
            return -1;
        }
    
        return 0;
    }
    
    $d1 = new DateTimeImmutable('2012-02-01 00:00:00.123456');
    $d2 = new DateTimeImmutable('2012-02-01 00:00:00.023456');
    
    var_dump(compareDate($d1, $d2));
}

Output for git.master, git.master_jit, rfc.property-hooks: int(1)

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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