使用 php 變量作為名稱創建 MySql 表

Question

我正在嘗試編寫一個基本的 function 創建一個以名稱作為參數的表。

When I execute the function I get this error: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '( id int(10) unsigned NOT NULL AUTO_INCREMENT, nom VARCHAR (255)，第 1 行的問題"

我查看了許多論壇帖子，似乎這種語法適用於某些人，但不適用於 meeee：這是我的代碼：

function connexion_bd() {
    $serv ="localhost";
    $username = "root";
    $pwd = "blah_blah";
    $bd ="project";
    $connex = mysqli_connect($serv, $username, $pwd, $bd);  
    if (! $connex) {
        page_erreur(ERR_CONNEX, mysqli_connect_error($connex)); exit; 
    }
    return $connex;
}

function creer_jeu_bdd($nom) {
    $connex = connexion_bd();

    $nom = mysqli_real_escape_string($connex,$nom);

    $req = "CREATE TABLE IF NOT EXISTS ".$nom." ( 
        id int(10) unsigned NOT NULL AUTO_INCREMENT,
        nom VARCHAR (255),
        question text NOT NULL,
        reponse1 VARCHAR(256) NOT NULL DEFAULT ``,
        reponse2 VARCHAR(256) NOT NULL DEFAULT ``,
        reponse3 VARCHAR(256) NOT NULL DEFAULT ``,
        bonne_reponse TINYINT(2) UNSIGNED NOT NULL,
        foreign key (nom) references jeux(nom),
        primary key(`id`)
    )ENGINE=InnoDB DEFAULT CHARSET=utf8; ";
    $resultat = mysqli_query($connex, $req);

    if (!$resultat) {
        page_erreur(ERR_REQUETE, mysqli_error($connex)); 
    } elseif (mysqli_num_rows($resultat) > 0) {
        page_erreur(ERR_LOGIN, ''); 
    }
    mysqli_close($connex);
    exit;
}

非常感謝。

Answer 1

您的 varchar 的默認值必須是 char，因此請使用單引號和 niot 反引號

請檢查何時在 MySQL 中使用單引號、雙引號和反引號

 $req = "CREATE TABLE IF NOT EXISTS ".$nom." ( 
        id int(10) unsigned NOT NULL AUTO_INCREMENT,
        nom VARCHAR (255),
        question text NOT NULL,
        reponse1 VARCHAR(256) NOT NULL DEFAULT '',
        reponse2 VARCHAR(256) NOT NULL DEFAULT '',
        reponse3 VARCHAR(256) NOT NULL DEFAULT '',
        bonne_reponse TINYINT(2) UNSIGNED NOT NULL,
        foreign key (nom) references jeux(nom),
        primary key(`id`)
    )ENGINE=InnoDB DEFAULT CHARSET=utf8; ";