gistfile1.php

<?php

require_once 'vendor/autoload.php';
$localTable = [
    ["fd", "df"],
    ["fd", "fd"],
    [null, "fd"],
    ["fd", null],
];

$remoteTable = [
    ["A", "new_column_2"],
    [null, null],
    ["fd", "df"],
    ["fd", "fd"],
];

$localTableView  = new \coopy_PhpTableView($localTable);
$remoteTableView = new \coopy_PhpTableView($remoteTable);

$compareView = \coopy_Coopy::compareTables($localTableView, $remoteTableView);

// compute aligment
$alignment = $compareView->align();

// produce the diff
$tableDiffData = [];
$tableDiffView = new \coopy_PhpTableView($tableDiffData);

$flags = new \coopy_CompareFlags();
$flags->always_show_order = true;
$flags->never_show_order = false;

$highlighter = new \coopy_TableDiff($alignment, $flags);
$highlighter->hilite($tableDiffView);


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

echo $htmlDiffRender->html();