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<?php
/* interface contains only fixed-name declarations/stubs in with no access levels, yet it allows public,
* no ctors, no data members, no method definitions, no restriction on who implements this interface
*
*/
interface iDB {
const MAX_RECORDS = 5000;
public function query();
public function drop();
}
class MyDBDriver implements iDB {
public function query() {
echo "querying" . PHP_EOL;
}
public function drop() {
echo "dropping" . PHP_EOL;
}
}
$db = new MyDBDriver();
$db->query() . PHP_EOL;
$db = NULL;
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