What methods can be used to customize the content of generated files in PHP?

To customize the content of generated files in PHP, you can use string manipulation functions like `str_replace()` or regular expressions to modify the content before writing it to the file. Additionally, you can use templates with placeholders that are replaced with dynamic content using `sprintf()` or `vsprintf()`.

// Example of customizing content of generated file using str_replace()
$content = "Hello, [NAME]! Your order total is [TOTAL].";
$content = str_replace("[NAME]", "John Doe", $content);
$content = str_replace("[TOTAL]", "$50.00", $content);

// Write the customized content to a file
$filename = "customized_file.txt";
file_put_contents($filename, $content);