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mysqli::$connect_error

mysqli_connect_error

(PHP 5, PHP 7)

mysqli::$connect_error -- mysqli_connect_errorReturns a string description of the last connect error

说明

面向对象风格

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

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