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

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];
}

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