1 database.inc | public DatabaseConnection::escapeAlias($field) |
Escapes an alias name string.
Force all alias names to be strictly alphanumeric-plus-underscore. In contrast to DatabaseConnection::escapeField() / DatabaseConnection::escapeTable(), this doesn't allow the period (".") because that is not allowed in aliases.
Parameters
string $field: The field alias to be escaped.
Return value
string: The sanitized field alias string.
File
- core/
includes/ database/ database.inc, line 1043 - Core systems for the database layer.
Class
- DatabaseConnection
- Base Database API class.
Code
public function escapeAlias($field) {
if (!isset($this->escapedAliases[$field])) {
$this->escapedAliases[$field] = preg_replace('/[^A-Za-z0-9_]+/', '', $field);
}
return $this->escapedAliases[$field];
}