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@ 2018-08-05T11:44:46Z

<?php
$MessagesArray = [
    ["date" => "2016/11/27"],
    ["date" => "2016/11/27"],
    ["date" => "2016/11/27"],
    ["date" => "2016/11/27"],
    ["date" => "2016/11/28"],
    ["date" => "2016/11/30"],
    ["date" => "2016/12/01"],
    ["date" => "2016/12/05"],
    ["date" => "2017/01/04"],
    ["date" => "2018/01/15"]
];
$yr = null;
$mo = null;
$dy = null;

foreach ($MessagesArray as $row) {
    if ($row["date"] == "$yr/$mo/$dy") {
        continue;
    }
    [$y, $m, $d] = explode("/", $row["date"]);
    if (($m != $mo || $y != $yr) && $mo !== null) {
        echo "\t</div>\n";
    }
    if ($y != $yr) {
        if ($yr !== null) {
            echo "</div>\n";
        }
        echo "<div class='year'>$y\n";
    }
    if ($m != $mo || $y != $yr) {
        echo "\t<div class='month'>Month $m\n";
    }
    echo "\t\t<div class='day'>Day $d</div>\n";
    $yr = $y;
    $mo = $m;
    $dy = $d;
}
if (sizeof($MessagesArray)) {
    echo "\t</div>\n</div>";
}

Output for git.master_jit, git.master, rfc.property-hooks: <div class='year'>2016 <div class='month'>Month 11 <div class='day'>Day 27</div> <div class='day'>Day 28</div> <div class='day'>Day 30</div> </div> <div class='month'>Month 12 <div class='day'>Day 01</div> <div class='day'>Day 05</div> </div> </div> <div class='year'>2017 <div class='month'>Month 01 <div class='day'>Day 04</div> </div> </div> <div class='year'>2018 <div class='month'>Month 01 <div class='day'>Day 15</div> </div> </div>

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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