PHP MySQL CRUD Generator

<?php
function generateCRUD(string $table, array $columns): string {
    $code = "<?php\n";
    $code .= "class {$table}Model {\n";
    foreach ($columns as $col) {
        $code .= "    public string \${$col};\n";
    }
    $code .= "}\n";
    return $code;
}