Compile SCSS files with PHP / SCSS PHP Compiler

compiler.php

<?php
require 'resources/vendor/autoload.php';

use ScssPhp\ScssPhp\Compiler;

$scss = new Compiler();

// Set the import paths for Bootstrap SCSS and other directories
$scss->setImportPaths('resources/scss');

// Define the paths to the SCSS files
$scssFiles = [
    'resources/scss/main.scss',
    'resources/scss/style.scss',
];

// Define the target directory for the compiled CSS files
$targetDir = 'assets/css/';

// Function to get the last modified time of a file
function getLastModifiedTime($file) {
    return file_exists($file) ? filemtime($file) : 0;
}

// Function to get the file size in a human-readable format
function humanFileSize($size) {
    $units = ['B', 'KB', 'MB', 'GB', 'TB'];
    $power = $size > 0 ? floor(log($size, 1024)) : 0;
    return number_format($size / pow(1024, $power), 2, '.', ',') . ' ' . $units[$power];
}

// Get the initial last modified times of all SCSS files
$lastModifiedTimes = [];
foreach ($scssFiles as $file) {
    $lastModifiedTimes[$file] = getLastModifiedTime($file);
}

// Infinite loop to watch for file changes
while (true) {
    clearstatcache();  // Clears the file status cache

    foreach ($scssFiles as $file) {
        $newModifiedTime = getLastModifiedTime($file);

        // If the file has been modified, recompile it
        if ($newModifiedTime > $lastModifiedTimes[$file]) {
            echo "Detected changes in {$file}, recompiling...\n";

            // Start timing the compilation
            $startTime = microtime(true);

            // Get the content of the SCSS file
            $scssCode = file_get_contents($file);

            // Compile the SCSS into CSS
            try {
                $cssCode = $scss->compile($scssCode);

                // Get the filename without the extension (e.g., main, style)
                $fileName = basename($file, '.scss');

                // Define the full path to the target CSS file
                $cssFilePath = $targetDir . $fileName . '.css';

                // Write the compiled CSS to the target file
                file_put_contents($cssFilePath, $cssCode);

                // Calculate the compilation time
                $compilationTime = microtime(true) - $startTime;

                // Get the size of the SCSS and compiled CSS files
                $scssFileSize = filesize($file);
                $cssFileSize = filesize($cssFilePath);

                echo "Compiled and saved {$file} to {$cssFilePath} in " . round($compilationTime, 4) . " seconds.\n";
                echo "SCSS file size: " . humanFileSize($scssFileSize) . "\n";
                echo "CSS file size: " . humanFileSize($cssFileSize) . "\n";

                // Update the last modified time after successful compilation
                $lastModifiedTimes[$file] = $newModifiedTime;
            } catch (Exception $e) {
                echo "Error compiling SCSS: " . $e->getMessage() . "\n";
            }
        }
    }

    // Sleep for 2 seconds before checking again
    sleep(2);
}
?>