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mysqli::$errno

mysqli_errno

(PHP 5, PHP 7, PHP 8)

mysqli::$errno -- mysqli_errnoReturns the error code for the most recent function call

Description

Object-oriented style

Procedural style

mysqli_errno(mysqli $mysql): int

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 #1 $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

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User Contributed Notes 1 note

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13
erwin at transpontine dot com
8 years ago
You can also find the error codes for for example MySQL 5.5 here: http://dev.mysql.com/doc/refman/5.5/en/error-handling.html
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