Rename svg files

rename.php

<?php
// Open the current directory
$dir = opendir('.');

// Array to keep track of base filenames
$baseNames = [];

// Loop through all files in the directory
while (($file = readdir($dir)) !== false) {
    // Check if the file is an SVG file
    if (pathinfo($file, PATHINFO_EXTENSION) === 'svg') {
        // Check if the file size is zero bytes
        if (filesize($file) === 0) {
            // Delete the file if it is zero bytes
            unlink($file);
            continue;
        }

        // Convert the filename to lowercase
        $newName = strtolower($file);
        // Replace spaces with dashes
        $newName = str_replace(' ', '-', $newName);
        // Replace & with 'and'
        $newName = str_replace('&', 'and', $newName);
        // Replace special characters with a dash, but preserve the dot before the extension
        $newName = preg_replace('/[^a-z0-9\-.]/', '-', $newName);
        // Replace multiple dashes with a single dash
        $newName = preg_replace('/-+/', '-', $newName);
        // Remove trailing dash
        $newName = rtrim($newName, '-');
        
        // Extract the base name (without -1, -2, etc.)
        $baseName = preg_replace('/-\d+/', '', pathinfo($newName, PATHINFO_FILENAME));
        
        // Check if the base name is already in the array
        if (isset($baseNames[$baseName])) {
            // If the base name exists, delete the current file
            unlink($file);
        } else {
            // Rename the file
            rename($file, $newName);
            // Add the base name to the array
            $baseNames[$baseName] = true;
        }
        
        // Remove -1 suffix if it exists
        $newName = preg_replace('/-\d+$/', '', $newName);
    }
}

// Close the directory
closedir($dir);