(PHP 5, PHP 7, PHP 8)
mysqli::$connect_error -- mysqli_connect_error — Returns a description of the last connection error
Object-oriented style
Procedural style
Returns the error message from the last connection attempt.
This function has no parameters.
A string that describes the error. null is returned if no error occurred.
Example #1 $mysqli->connect_error example
Object-oriented style
<?php
mysqli_report(MYSQLI_REPORT_OFF);
/* @ is used to suppress warnings */
$mysqli = @new mysqli('localhost', 'fake_user', 'wrong_password', 'does_not_exist');
if ($mysqli->connect_error) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . $mysqli->connect_error);
}Procedural style
<?php
mysqli_report(MYSQLI_REPORT_OFF);
/* @ is used to suppress warnings */
$link = @mysqli_connect('localhost', 'fake_user', 'wrong_password', 'does_not_exist');
if (!$link) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . mysqli_connect_error());
}