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@ 2020-09-09T11:36:38Z

<?php

$resultObject = [
    ['name' => 'Tom', 'value' => 15, 'year' => 2018],
    ['name' => 'Tom', 'value' => 4, 'year' => 2019],
    ['name' => 'Tom', 'value' => 6, 'year' => 2020],
    ['name' => 'Kate', 'value' => 18, 'year' => 2018],
    ['name' => 'Kate', 'value' => 20, 'year' => 2019],
];

$grouped = [];
$columns = [];

foreach ($resultObject as $row) {
    $grouped[$row['name']][$row['year']] = $row['value'];
    $columns[$row['year']] = $row['year'];
}

sort($columns);
$defaults = array_fill_keys($columns, '-');
array_unshift($columns, 'name');

echo "<table>\n";
    printf(
        "<tr><th>%s</th></tr>\n",
        implode('</th><th>', $columns)
    );
    foreach ($grouped as $name => $records) {
        printf(
            "<tr><td>%s</td><td>%s</td></tr>\n",
            $name,
            implode('</td><td>', array_replace($defaults, $records))
        );
    }
echo "</table>";

Output for git.master, git.master_jit, rfc.property-hooks: <table> <tr><th>name</th><th>2018</th><th>2019</th><th>2020</th></tr> <tr><td>Tom</td><td>15</td><td>4</td><td>6</td></tr> <tr><td>Kate</td><td>18</td><td>20</td><td>-</td></tr> </table>

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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