50 lines
1.4 KiB
PHP
50 lines
1.4 KiB
PHP
<?php
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// IDbConnection.php
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// Created: 2021-04-30
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// Updated: 2022-02-27
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namespace Index\Data;
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use Index\ICloseable;
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/**
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* Represents a connection to a database service.
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*/
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interface IDbConnection extends ICloseable {
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/**
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* Returns the ID of the last inserted row.
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*
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* @return int|string Last inserted ID.
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*/
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function getLastInsertId(): int|string;
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/**
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* Prepares a statement for execution and returns a database statement instance.
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*
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* The statement should use question mark (?) parameters.
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*
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* @param string $query SQL query to prepare.
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* @return IDbStatement An instance of an implementation of IDbStatement.
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*/
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function prepare(string $query): IDbStatement;
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/**
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* Executes a statement and returns a database result instance.
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*
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* @param string $query SQL query to execute.
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* @return IDbResult An instance of an implementation of IDbResult
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*/
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function query(string $query): IDbResult;
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/**
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* Executes a statement and returns how many rows are affected.
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*
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* Does not request results back from the database and thus should have better
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* performance if the consumer doesn't care about them.
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*
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* @param string $query SQL query to execute.
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* @return int|string Number of rows affected by the query.
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*/
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function execute(string $query): int|string;
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}
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