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    The mysqli class

    (PHP 5, PHP 7)

    소개

    Represents a connection between PHP and a MySQL database.

    클래스 개요

    mysqli {
    /* 프로퍼티 */
    int $affected_rows;
    string $client_info;
    int $client_version;
    int $connect_errno;
    string $connect_error;
    int $errno;
    array $error_list;
    string $error;
    int $field_count;
    int $client_version;
    string $host_info;
    string $protocol_version;
    string $server_info;
    int $server_version;
    string $info;
    mixed $insert_id;
    string $sqlstate;
    int $thread_id;
    int $warning_count;
    /* 메소드 */
    __construct ([ string $host = ini_get("mysqli.default_host") [, string $username = ini_get("mysqli.default_user") [, string $passwd = ini_get("mysqli.default_pw") [, string $dbname = "" [, int $port = ini_get("mysqli.default_port") [, string $socket = ini_get("mysqli.default_socket") ]]]]]] )
    bool autocommit ( bool $mode )
    bool change_user ( string $user , string $password , string $database )
    string character_set_name ( void )
    bool close ( void )
    bool commit ([ int $flags [, string $name ]] )
    bool debug ( string $message )
    bool dump_debug_info ( void )
    object get_charset ( void )
    string get_client_info ( void )
    bool get_connection_stats ( void )
    mysqli_warning get_warnings ( void )
    mysqli init ( void )
    bool kill ( int $processid )
    bool more_results ( void )
    bool multi_query ( string $query )
    bool next_result ( void )
    bool options ( int $option , mixed $value )
    bool ping ( void )
    public static int poll ( array &$read , array &$error , array &$reject , int $sec [, int $usec ] )
    mysqli_stmt prepare ( string $query )
    mixed query ( string $query [, int $resultmode = MYSQLI_STORE_RESULT ] )
    bool real_connect ([ string $host [, string $username [, string $passwd [, string $dbname [, int $port [, string $socket [, int $flags ]]]]]]] )
    string escape_string ( string $escapestr )
    bool real_query ( string $query )
    public mysqli_result reap_async_query ( void )
    public bool refresh ( int $options )
    bool rollback ([ int $flags [, string $name ]] )
    int rpl_query_type ( string $query )
    bool select_db ( string $dbname )
    bool send_query ( string $query )
    bool set_charset ( string $charset )
    bool set_local_infile_handler ( mysqli $link , callable $read_func )
    bool ssl_set ( string $key , string $cert , string $ca , string $capath , string $cipher )
    string stat ( void )
    mysqli_stmt stmt_init ( void )
    mysqli_result store_result ([ int $option ] )
    mysqli_result use_result ( void )
    }

    Table of Contents

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    User Contributed Notes 2 notes

    up
    1
    user at note dot com
    4 years ago
    <?php

    class Database{

        protected     $url;
        protected     $user;
        protected     $password;
        protected     $db;
        protected     $connection = null;

        public function     __construct($url, $user, $password, $db)
        {
                $this->url = $url;
                $this->user = $user;
                $this->password = $password;
                $this->db = $db;
        }
        public function     __destruct()
        {
            if(    $this->connection != null){
                    $this->closeConnection();
            }
        }
        protected function     makeConnection(){

                $this->connection = new mysqli($this->url, $this->user, $this->password, $this->db);
            if(    $this->connection->connect_error){
                echo     "Fail" . $this->connection->connect_error;
            }
        }
        protected function     closeConnection(){
            if(    $this->connection != null){
                    $this->connection->close();
                    $this->connection = null;
            }
        }
        public function     executeQuery($query, $params = null){
                // Is there a DB connection?
                $this->makeConnection();
                // Adjust query with params if available
                if($params != null){
                    // Change ? to values from parameter array
                    $queryParts = preg_split("/\?/", $query);
                    // if amount of ? is not equal to amount of values => error
                    if(count($queryParts) != count($params) + 1){
                    return     false;
                }
                    // Add first part
                    $finalQuery = $queryParts[0];
                    // Loop over all parameters
                    for($i = 0; $i < count($params); $i++){
                        // Add clean parameter to query
                        $finalQuery = $finalQuery . $this->cleanParameters($params[$i]) . $queryParts[$i + 1];
                }
                    $query = $finalQuery;
            }
                // Check for SQL injection

                $result = $this->connection->query($query);
            return     $result;
        }
        protected function     cleanParameters($parameters){
                // prevent SQL injection
                $result = $this->connection->real_escape_string($parameters);
            return     $result;
        }
    }

    ?>
    <?php
    include_once("Database.php");

    class     DatabaseFactory{
            // Singleton
            private static $connection;

        public static function     getDatabase(){
            if(    self::$connection == null){
                    $url = "dt5.ehb.be";
                    $user = "1920WEBINT038";
                    $passw = "94617528";
                    $db = "1920WEBINT038";
                    self::$connection = new Database($url, $user, $passw, $db);
            }
            return     self::$connection;
        }
    }

    ?>
    <?php

    class Book{
        public     $bookId;
        public     $title;
        public     $releasedate;
        public     $priceExclVAT;
        public     $emailPublisher;

        public function     __construct($bookId, $title, $releasedate, $priceExclVAT, $emailPublisher)
        {
                $this->bookId = $bookId;
                $this->title = $title;
                $this->releasedate = $releasedate;
                $this->priceExclVAT = $priceExclVAT;
                $this->emailPublisher = $emailPublisher;
        }

    }

    ?>
    up
    -8
    user at note dot com
    4 years ago
    <?php

    include_once("data/Book.php");
    include_once(    "DatabaseFactory.php");
    // CRUD methods for book objects
    class BookDB{

        private static function     getConnection(){
            return     DatabaseFactory::getDatabase();
        }

        public static function     getAll(){
                $query = "SELECT * FROM Book";
                // Execute query
                $conn = self::getConnection();
                $results = $conn->executeQuery($query);

                $resultsArray = array();

            for(    $i = 0; $i < $results->num_rows; $i++){
                    $row = $results->fetch_array(); // Retrieves the current selected row

                // Make a book
                    $book = self::convertRowToObject($row);

                    // Add book to resultsArray
                    $resultsArray[$i] = $book;
            }
            return     $resultsArray;
        }

        public static function     convertRowToObject($row){
            return new     Book(
                    $row["BookId"],
                    $row["Title"],
                    $row["Releasedate"],
                    $row["Price"],
                    $row["EmailPublisher"]
            );
        }

        public static function     insert($book){
            return     self::getConnection()->executeQuery("INSERT INTO Book(Title, Releasedate, Price, EmailPublisher) VALUES ('?', '?', '?', '?')", array($book->title, $book->releasedate, $book->priceExclVAT, $book->emailPublisher));
        }

    }

    ?>
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