PHP mysqli: connect_errno() function

mysqli_connect_errno() function / mysqli::$connect_errno

The mysqli_connect_errno() function / mysqli::$connect_errno returns the error code from the last connection error, if any.

Syntax:

Object oriented style

int $mysqli->connect_errno;

Procedural style

int mysqli_connect_errno ( void )

Usage: Procedural style

mysqli_commit(connection);

Return value:

An error code value for the last call to mysqli_connect(), if it failed. zero means no error occurred.

Version: PHP 5, PHP 7

Example of object oriented style:

<?php
$mysqli = @new mysqli('localhost', 'user1', 'datasoft123', 'hr');

if ($mysqli->connect_errno) {
    die('Connect Error: ' . $mysqli->connect_errno);
}
?>

Example of procedural style:

<?php
$link = @mysqli_connect('localhost', 'user1', 'datasoft123', 'hr');

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

Output:

Connect Error: 1045

Example:

<?php
$con=mysqli_connect("localhost","user1","datasoft123","hr");
// Check connection
if (!$con)
  {
  die("Connection error: " . mysqli_connect_errno());
  }
?>

Output:

Connection error: 0

See also

PHP Function Reference

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