(PHP 5, PHP 7)
mysqli::$connect_error -- mysqli_connect_error — Returns a string description of the last connect error
Object oriented style
Procedural style
mysqli_connect_error ( ) : string
Returns the last error message string from the last call to mysqli_connect().
A string that describes the error. null is returned if no error occurred.
Example #1 $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)
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.
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https://www.php.net/manual/en/mysqli.connect-error.php