Just looking at the index.php page in Symfony 4. Just wondered if someone could clarify what this means?
if ($trustedHosts = $_SERVER['TRUSTED_HOSTS'] ?? false) {
Request::setTrustedHosts([$trustedHosts]);
}
I'm thinking this this equivalent to the following but not sure thanks.
if(isset( $_SERVER['TRUSTED_HOSTS'] )){
$trustedHosts = $_SERVER['TRUSTED_HOSTS'];
Request::setTrustedHosts([$trustedHosts]);
}
CodePudding user response:
It's equivalent to:
$trustedHosts = isset($_SERVER['TRUSTED_HOSTS']) ? $trustedHosts : false;
if ($trustedHosts) {
Request::setTrustedHosts([$trustedHosts]);
}
The difference is that your rewrite only sets $trustedHosts
when $_SERVER['TRUSTED_HOSTS']
is set. But the actual code sets the variable always, giving it a default value if the $_SERVER
element isn't set.