function Connection::escapeAlias

Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Database/Driver/mysql/Connection.php \Drupal\Core\Database\Driver\mysql\Connection::escapeAlias()
  2. 8.9.x core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php \Drupal\Core\Database\Driver\pgsql\Connection::escapeAlias()
  3. 8.9.x core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::escapeAlias()
  4. 10 core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::escapeAlias()
  5. 11.x core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::escapeAlias()

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: An unsanitized alias name.

Return value

string The sanitized alias name.

File

core/lib/Drupal/Core/Database/Connection.php, line 1491

Class

Connection
Base Database API class.

Namespace

Drupal\Core\Database

Code

public function escapeAlias($field) {
    if (!isset($this->escapedAliases[$field])) {
        [
            $start_quote,
            $end_quote,
        ] = $this->identifierQuotes;
        $this->escapedAliases[$field] = $start_quote . preg_replace('/[^A-Za-z0-9_]+/', '', $field) . $end_quote;
    }
    return $this->escapedAliases[$field];
}

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