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Connectors and APIs Manual  /  ...  /  mysqli::$errno, mysqli_errno

7.3.8.13 mysqli::$errno, mysqli_errno

Copyright 1997-2022 the PHP Documentation Group.

  • mysqli::$errno

    mysqli_errno

    Returns the error code for the most recent function call

Description

Object-oriented style

int mysqli->errno ;

Procedural style

int mysqli_errno(mysqli mysql);

Returns the last error code for the most recent MySQLi function call that can succeed or fail.

Parameters

mysql

Procedural style only: A mysqli object returned by mysqli_connect or mysqli_init

Return Values

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

Examples

Example 7.48 $mysqli->errno example

Object-oriented style

<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if ($mysqli->connect_errno) {
    printf("Connect failed: %s\n", $mysqli->connect_error);
    exit();
}
if (!$mysqli->query("SET a=1")) {
    printf("Errorcode: %d\n", $mysqli->errno);
}
/* close connection */
$mysqli->close();
?>

Procedural style

<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}
if (!mysqli_query($link, "SET a=1")) {
    printf("Errorcode: %d\n", mysqli_errno($link));
}
/* close connection */
mysqli_close($link);
?>

The above examples will output:

Errorcode: 1193


See Also

mysqli_connect_errno
mysqli_connect_error
mysqli_error
mysqli_sqlstate