Stelian

ALTER TABLE objects ADD COLUMN namespace  VARCHAR(255) GENERATED ALWAYS AS (SUBSTRING_INDEX(key, '.', 1)) STORED;

Stelian

/** Instantiating a class **/ 
function __autoload($name) {
    echo "Want to load $name.\n";
    throw new Exception("Unable to load $name. \n");
}

try {
    $obj = new NonLoadableClass();
} catch (Exception $e) {
    echo $e->getMessage(), "\n";