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<?php

namespace Doctrine\DBAL\Driver;

use Doctrine\DBAL\ParameterType;

/**

 * Driver-level statement

 */

interface Statement

{

    /**

     * Binds a value to a corresponding named (not supported by mysqli driver, see comment below) or positional

     * placeholder in the SQL statement that was used to prepare the statement.

     *

     * As mentioned above, the named parameters are not natively supported by the mysqli driver, use executeQuery(),

     * fetchAll(), fetchArray(), fetchColumn(), fetchAssoc() methods to have the named parameter emulated by doctrine.

     *

     * @param string|int $param Parameter identifier. For a prepared statement using named placeholders,

     *                          this will be a parameter name of the form :name. For a prepared statement

     *                          using question mark placeholders, this will be the 1-indexed position of the parameter.

     * @param mixed      $value The value to bind to the parameter.

     * @param int        $type  Explicit data type for the parameter using the {@see ParameterType}

     *                          constants.

     *

     * @return bool TRUE on success or FALSE on failure.

     *

     * @throws Exception

     */

    public function bindValue($param, $value, $type = ParameterType::STRING);

    /**

     * Binds a PHP variable to a corresponding named (not supported by mysqli driver, see comment below) or question

     * mark placeholder in the SQL statement that was use to prepare the statement. Unlike {@see bindValue()},

     * the variable is bound as a reference and will only be evaluated at the time

     * that PDOStatement->execute() is called.

     *

     * As mentioned above, the named parameters are not natively supported by the mysqli driver, use executeQuery(),

     * fetchAll(), fetchArray(), fetchColumn(), fetchAssoc() methods to have the named parameter emulated by doctrine.

     *

     * Most parameters are input parameters, that is, parameters that are

     * used in a read-only fashion to build up the query. Some drivers support the invocation

     * of stored procedures that return data as output parameters, and some also as input/output

     * parameters that both send in data and are updated to receive it.

     *

     * @deprecated Use {@see bindValue()} instead.

     *

     * @param string|int $param    Parameter identifier. For a prepared statement using named placeholders,

     *                             this will be a parameter name of the form :name. For a prepared statement using

     *                             question mark placeholders, this will be the 1-indexed position of the parameter.

     * @param mixed      $variable Name of the PHP variable to bind to the SQL statement parameter.

     * @param int        $type     Explicit data type for the parameter using the {@see ParameterType}

     *                             constants.

     * @param int|null   $length   You must specify maxlength when using an OUT bind

     *                             so that PHP allocates enough memory to hold the returned value.

     *

     * @return bool TRUE on success or FALSE on failure.

     *

     * @throws Exception

     */

    public function bindParam($param, &$variable, $type = ParameterType::STRING, $length = null);

    /**

     * Executes a prepared statement

     *

     * If the prepared statement included parameter markers, you must either:

     * call {@see bindParam()} to bind PHP variables to the parameter markers:

     * bound variables pass their value as input and receive the output value,

     * if any, of their associated parameter markers or pass an array of input-only

     * parameter values.

     *

     * @param mixed[]|null $params A numeric array of values with as many elements as there are

     *                             bound parameters in the SQL statement being executed.

     *

     * @throws Exception

     */

    public function execute($params = null): Result;

}