mysqli->errno
mysqli->field_count
MySQLi
PHP Manual

# mysqli->error

# mysqli_error

(PHP 5)

mysqli_error — Returns a string description of the last error

### Description

Object oriented style (property):

mysqli
string$error;

Procedural style:

string mysqli_error ( mysqli `$link` )

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

### Parameters

`link`

  Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

### Return Values

A string that describes the error. An empty string if no error occurred.

### Examples

Example#1 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("Errormessage: %s\n", $mysqli->error);
}
/* close connection */
$mysqli->close();
?>`

Example#2 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("Errormessage: %s\n", mysqli_error($link));
}
/* close connection */
mysqli_close($link);
?>`

The above example will output:

    Errormessage: Unknown system variable 'a'

### See Also

- mysqli_connect_errno()
- mysqli_connect_error()
- mysqli_errno()
- mysqli_sqlstate()

mysqli->errno
mysqli->field_count
MySQLi
PHP Manual