mysqli::$connect_error

(PHP 5, PHP 7)

Returns a string description of the last connect error

string mysqli_connect_error ( void )

Object oriented style

string $mysqli->connect_error;

Procedural style

Returns the last error message string from the last call to mysqli_connect().

Returns:

A string that describes the error. NULL is returned if no error occurred.

Examples:

$mysqli->connect_error example

Object oriented style

<?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);
}
?>

Procedural style

<?php
$link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');

if (!$link) {
    die('Connect Error: ' . mysqli_connect_error());
}
?>

The above examples will output:

Connect Error: Access denied for user 'fake_user'@'localhost' (using password: YES)