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<?php /** * This file is part of CodeIgniter 4 framework. * * (c) CodeIgniter Foundation <admin@codeigniter.com> * * For the full copyright and license information, please view * the LICENSE file that was distributed with this source code. */ namespace CodeIgniter\Database\Postgre; use BadMethodCallException; use CodeIgniter\Database\BasePreparedQuery; use Exception; /** * Prepared query for Postgre */ class PreparedQuery extends BasePreparedQuery { /** * Stores the name this query can be * used under by postgres. Only used internally. * * @var string */ protected $name; /** * The result resource from a successful * pg_exec. Or false. * * @var bool|Result */ protected $result; /** * Prepares the query against the database, and saves the connection * info necessary to execute the query later. * * NOTE: This version is based on SQL code. Child classes should * override this method. * * @param array $options Passed to the connection's prepare statement. * Unused in the MySQLi driver. * * @return mixed * * @throws Exception */ public function _prepare(string $sql, array $options = []) { $this->name = (string) random_int(1, 10_000_000_000_000_000); $sql = $this->parameterize($sql); // Update the query object since the parameters are slightly different // than what was put in. $this->query->setQuery($sql); if (! $this->statement = pg_prepare($this->db->connID, $this->name, $sql)) { $this->errorCode = 0; $this->errorString = pg_last_error($this->db->connID); } return $this; } /** * Takes a new set of data and runs it against the currently * prepared query. Upon success, will return a Results object. */ public function _execute(array $data): bool { if (! isset($this->statement)) { throw new BadMethodCallException('You must call prepare before trying to execute a prepared statement.'); } $this->result = pg_execute($this->db->connID, $this->name, $data); return (bool) $this->result; } /** * Returns the result object for the prepared query. * * @return mixed */ public function _getResult() { return $this->result; } /** * Replaces the ? placeholders with $1, $2, etc parameters for use * within the prepared query. */ public function parameterize(string $sql): string { // Track our current value $count = 0; return preg_replace_callback('/\?/', static function () use (&$count) { $count++; return "\${$count}"; }, $sql); } }