public function DatabaseConnection::escapeAlias in Drupal 7
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.
Return value
string The sanitized field name string.
1 call to DatabaseConnection::escapeAlias()
- DatabaseConnection_mysql::escapeAlias in includes/
database/ mysql/ database.inc - Escapes an alias name string.
1 method overrides DatabaseConnection::escapeAlias()
- DatabaseConnection_mysql::escapeAlias in includes/
database/ mysql/ database.inc - Escapes an alias name string.
File
- includes/
database/ database.inc, line 1021 - 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];
}