文字

mysqli::$connect_error

mysqli_connect_error

(PHP 5)

mysqli::$connect_error -- mysqli_connect_errorReturns 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

string mysqli_connect_error ( void )

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_error example

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

Warning

The 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() - Returns the SQLSTATE error from previous MySQL operation
上一篇: 下一篇: