How can the isset function be used to prevent errors when including files in PHP?

When including files in PHP, it is important to check if the file exists before including it to prevent errors. This can be done using the isset function to verify if the file path is set and not null. By using isset, we can avoid including non-existent files and prevent PHP errors. 

$file_path = 'path/to/file.php';

if (isset($file_path) && file_exists($file_path)) {
    include $file_path;
} else {
    echo 'File does not exist.';
}

Keywords

isset include files errors PHP

Related Questions