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@ 2015-03-26T14:35:34Z

<?php
/**
 * @param string $from
 * @param string $to
 * @return string
 */
function dateDiffString($from, $to)
{
    $fromDate = new \DateTime($from);
    $toDate = new \DateTime($to);
    if($fromDate->format('Y') !== $toDate->format('Y')){
        return $fromDate->format('M d Y') . " - " . $toDate->format('M d Y');
    }
    if($fromDate->format('m') !== $toDate->format('m')){
        return $fromDate->format('M d') . ' - ' . $toDate->format('M d, Y');
    }
    return $fromDate->format('M d') . ' - ' . $toDate->format('d, Y');
}

$from = '2015-03-29';
$to = '2015-04-03';
echo dateDiffString($from, $to) . PHP_EOL;

$from = '2015-03-31';
$to = '2015-04-02';
echo dateDiffString($from, $to) . PHP_EOL;

$from = '2015-03-05';
$to = '2015-03-07';
echo dateDiffString($from, $to) . PHP_EOL;

Output for git.master, git.master_jit, rfc.property-hooks: Mar 29 - Apr 03, 2015 Mar 31 - Apr 02, 2015 Mar 05 - 07, 2015

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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