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我很困惑为什么下面的代码成功地在我的数据库表中添加了一个新行,同时mysqli_affected_rows($dbc)返回“-1”,因此在 signup.php 中出现错误:

dbc.inc.php:

DEFINE ('DB_USER', 'root');
DEFINE ('DB_PASSWORD', '');
DEFINE ('DB_HOST', 'localhost');
DEFINE ('DB_NAME', 'v');


$dbc = mysqli_connect (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME) or die('Error connecting to MySQL server.');

mysqli_set_charset($dbc, 'utf8');

注册.php:

require('dbc.inc.php');

//code to set variables for the following SQL statement

$q = "INSERT INTO users (username, email, pass, first_name, last_name, sex, birth_day, birth_month, birth_year, phone, street, street_nr, city, zip_code, country, user_img) VALUES ('$u', '$e', '$p', '$fn', '$ln', '$sex', '$bd', '$bm', '$by', '$pn', '$st', '$sn', '$cit', '$pc', '$ct', '$user_img')";
$r = mysqli_query($dbc, $q) or die(msg(0, "Error connecting to the database"));

if (mysqli_affected_rows($dbc) === 1) { //Returns 'false' despite one row having been added...
echo "Success";
}
else {
echo "Error"; //...resulting in "Error" being echoed
}

出于测试目的: SQL 创建表“用户”:

CREATE TABLE IF NOT EXISTS `v`.`users` (
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `type` ENUM('member','admin') NOT NULL DEFAULT 'member',
  `username` VARCHAR(45) NOT NULL,
  `email` VARCHAR(80) NOT NULL,
  `pass` VARCHAR(255) NOT NULL,
  `first_name` VARCHAR(45) NOT NULL,
  `last_name` VARCHAR(45) NOT NULL,
  `sex` CHAR(1) NOT NULL,
  `birth_day` INT NOT NULL,
  `birth_month` INT NULL,
  `birth_year` INT NULL,
  `phone` VARCHAR(20) NULL,
  `street` VARCHAR(60) NOT NULL,
  `street_nr` VARCHAR(9) NOT NULL,
  `city` VARCHAR(45) NOT NULL,
  `zip_code` VARCHAR(45) NOT NULL,
  `country` VARCHAR(45) NOT NULL,
  `user_img` VARCHAR(65) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE INDEX `username_UNIQUE` (`username` ASC),
  UNIQUE INDEX `email_UNIQUE` (`email` ASC),
  INDEX `login` (`email` ASC, `pass` ASC))
ENGINE = InnoDB
AUTO_INCREMENT = 4
DEFAULT CHARACTER SET = utf8;

我将非常感谢您的提示!

编辑: 与此同时,我已经能够进一步隔离问题:代码可以直接在 Web 浏览器中正常运行,只是在 Netbeans/Xdebugmysqli_affected_rows($dbc)中,相应行中首先正确返回“1”,但在进入以下内容之后行 (F7) 突然变为“-1”,因此错误地跳转到“else”分支,尽管数据已正确写入数据库,但返回错误。显然我不是唯一一个有这个问题的人

这些是我在 php.ini 中的 Xdebug 设置,但我认为它们是正确的。

zend_extension = "C:\xampp\php\ext\php_xdebug.dll"
;xdebug.profiler_append = 0
xdebug.profiler_enable = 1
;xdebug.profiler_enable_trigger = 0
;xdebug.profiler_output_dir = "C:\xampp\tmp"
;xdebug.profiler_output_name = "cachegrind.out.%t-%s"
xdebug.remote_enable = 1
xdebug.remote_handler = "dbgp"
xdebug.remote_host = "localhost"
xdebug.remote_port = 9000
;xdebug.trace_output_dir = "C:\xampp\tmp"

任何线索任何人?

4

1 回答 1

0

我已经测试了您的代码,当新记录插入数据库时​​它会显示 Success,请重新检查您的数据库以确保数据插入

mysqli_affected_rows:返回值

    - An integer > 0 indicates the number of rows affected. 
    - 0 indicates that no records where affected &
    -1 indicates that the query returned an error(that may be you case)
于 2014-05-24T19:17:22.847 回答