What are the best practices for handling safe mode and open_basedir restrictions in PHP scripts?

Safe mode and open_basedir restrictions are security features in PHP that limit the files and directories a script can access. To handle these restrictions, it is important to check if safe mode is enabled and respect the open_basedir setting when working with file operations in PHP scripts.

// Check if safe mode is enabled
if(ini_get('safe_mode')){
    // Handle safe mode restrictions here
}

// Respect open_basedir restrictions
if(ini_get('open_basedir')){
    $allowed_path = ini_get('open_basedir');
    $file_to_read = '/path/to/file.txt';
    
    if(strpos($file_to_read, $allowed_path) !== 0){
        die('Access to the file is not allowed.');
    }
    
    // Proceed with file operations
    $file_contents = file_get_contents($file_to_read);
    echo $file_contents;
}