gistfile3.php

<?php

require_once 'vendor/autoload.php';
$localTable = [
    ["X", "Y"],
    ["X", "X"],
    ["X", "X"],
];

$remoteTable = [
    ["X", "Y"],
    ["X", "X"],
    [null, "X"],
];

$originalLocalTable = $localTable; // because $localTable is passed by reference and modified
$localTableView  = new \coopy_PhpTableView($localTable);
$remoteTableView = new \coopy_PhpTableView($remoteTable);

$dataDiff = [];
$tableDiff = new \coopy_PhpTableView($dataDiff);

$highlighter = new \coopy_TableDiff(
    \coopy_Coopy::compareTables($localTableView, $remoteTableView)->align(),
    new \coopy_CompareFlags()
);
$highlighter->hilite($tableDiff);

$htmlDiffRender = new \coopy_DiffRender();
$htmlDiffRender->usePrettyArrows(false);
$htmlDiffRender->render($tableDiff);

echo $htmlDiffRender->html();

$patch = new \coopy_HighlightPatch(
    $localTableView,
    $tableDiff
);

$patch->apply();

print_r($localTableView->getData());