返回早期概念如何在PHP中有用

Question

I have gone through the best practises in the following link https://pear.php.net/manual/en/standards.bestpractices.php. I am still not quite clear about the return early concept in PHP . Is it used to reduce the no of else conditions in a PHP function ? When should we ideally use this concept and why is it useful?

Answer 1

Short example why it can be usefull

//some demo function
function connect_to_ftp($host, $user, $pass){
    //some check if the host is a valid host, just for demonstration
    if (not_a_valid_host($host)) return false;
    //if the host is valid, continue executing, no else required
    make_ftp_connection($host, $user, $pass);
    return true;
}