MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
mysqli::$error
mysqli_error
Returns a string description of the last error
Object oriented style
string mysqli->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.
link
Procedural style only: A link identifier returned by
mysqli_connect
or
mysqli_init
A string that describes the error. An empty string if no error occurred.
Example 3.43 $mysqli->error
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("Error message: %s\n", $mysqli->error); } /* 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("Error message: %s\n", mysqli_error($link)); } /* close connection */ mysqli_close($link); ?>
The above examples will output:
Error message: Unknown system variable 'a'
mysqli_connect_errno
|
mysqli_connect_error
|
mysqli_errno
|
mysqli_sqlstate
|