mysqli::$connect_error()
(PHP 5, PHP 7)
Returns a string description of the last connect error
说明
面向对象风格
string $mysqli->connect_error;
过程化风格
mysqli_connect_error(void): string
Returns the last error message string from the last call to mysqli_connect().
返回值
A string that describes the error.NULL
is returned if no error occurred.
范例
Example #1$mysqli->connect_errorexample
面向对象风格
<?php $mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db'); // Works as of PHP 5.2.9 and 5.3.0. if ($mysqli->connect_error) { die('Connect Error: ' . $mysqli->connect_error); } ?>
过程化风格
<?php $link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db'); if (!$link) { die('Connect Error: ' . mysqli_connect_error()); } ?>
以上例程会输出:
Connect Error: Access denied for user 'fake_user'@'localhost' (using password: YES)
注释
WarningThe mysqli->connect_error property only works properly as of PHP versions 5.2.9 and 5.3.0. Use the mysqli_connect_error() function if compatibility with earlier PHP versions is required.
参见
mysqli_connect()
别名 mysqli::__construct- mysqli_connect_errno() Returns the error code from last connect call
- mysqli_errno() 返回最近函数调用的错误代码
- mysqli_error() Returns a string description of the last error
- mysqli_sqlstate() 返回上一次 SQL 操作的 SQLSTATE 错误信息
<?php class bDBresult { private $result; public function __construct($res) { $this->result = $res; } public function num_rows() { return $this->result->num_rows; } public function next_row() { return $this->result->fetch_assoc(); } } class bDB { private static $conf; private $conn; public static function set_conf_file($dbconf_path) { self::$conf = parse_ini_file($dbconf_path); } public function __construct() { $this->conn = new mysqli( self::$conf['db.host.address'], self::$conf['db.user.admin.name'], self::$conf['db.user.admin.password'], self::$conf['db.bibliotecando.name'] ); } public function send_query($coms) { return new bDBresult($this->conn->query($coms)); } } ?>