PHP - convert woff files from google webfont helper to inline base64 css

convert-woff-to-inline-base64.php

<?php
// I know this is very ugly, but good enough for my use case.
// this is highly dependent on fonts from https://gwfh.mranftl.com/fonts/ because of the file names. 


$files = glob(__DIR__ . '/fonts/*.woff');

foreach ($files as $file) {
    $baseDirectory = pathinfo($file, PATHINFO_DIRNAME);
    $fileName = basename($file);
    $fileNameWithoutExtension = pathinfo($fileName, PATHINFO_FILENAME);
    $fileExtension = pathinfo($fileName, PATHINFO_EXTENSION);

    $matches = [];
    preg_match_all('/^(.*)?-(.*)?-(.*)?-([0-9]{3})?(.*)/m', $fileNameWithoutExtension, $matches);

    [$fullName, $fontName, $version, $type, $fontWeight, $fontStyle] = $matches;

    $fontName = ucfirst($fontName[0]);
    $fontWeight = ($fontWeight[0]) ?: 400;
    $fontStyle = ($fontStyle[0] === 'italic') ? 'italic': 'normal';

    $base64ContentWoff = base64_encode(file_get_contents("$baseDirectory/$fileName"));
    $base64ContentWoff2 = base64_encode(file_get_contents("$baseDirectory/$fileNameWithoutExtension" . '.woff2'));

    $res .= <<<CSS
    
@font-face { 
    font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
    font-family: '{$fontName}';
    font-style: {$fontStyle};
    font-weight: {$fontWeight};
    src: url(data:application/octet-stream;base64,{$base64ContentWoff2}) format('woff2'), 
         url(data:application/octet-stream;base64,{$base64ContentWoff}) format('woff');
}

CSS;
}

file_put_contents(__DIR__ . '/fontfile-with-inline-base64.css', $res );