'errmsg.h' and 'mysqld_error.h' files only have the definitions of the error codes. In the MySQL documentation you can find the definition along with the message it displays, which could be more useful since the error constant name isn't always explicit enough.
Client Error Codes and Messages
http://dev.mysql.com/doc/refman/5.6/en/error-messages-client.html
Server Error Codes and Messages
http://dev.mysql.com/doc/refman/5.6/en/error-messages-server.html
mysqli::$connect_errno
mysqli_connect_errno
(PHP 5, PHP 7)
mysqli::$connect_errno -- mysqli_connect_errno — Returns the error code from last connect call
Beschreibung
Objektorientierter Stil
Prozeduraler Stil
mysqli_connect_errno
(
) : int
Returns the last error code number from the last call to mysqli_connect().
Hinweis:
Client error message numbers are listed in the MySQL errmsg.h header file, server error message numbers are listed in mysqld_error.h. In the MySQL source distribution you can find a complete list of error messages and error numbers in the file Docs/mysqld_error.txt.
Rückgabewerte
An error code value for the last call to mysqli_connect(), if it failed. zero means no error occurred.
Beispiele
Beispiel #1 $mysqli->connect_errno example
Objektorientierter Stil
<?php
$mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db');
if ($mysqli->connect_errno) {
die('Connect Error: ' . $mysqli->connect_errno);
}
?>
Prozeduraler Stil
<?php
$link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');
if (!$link) {
die('Connect Error: ' . mysqli_connect_errno());
}
?>
Die obigen Bespiele erzeugen folgende Ausgabe:
Connect Error: 1045
Siehe auch
- mysqli_connect() - Alias von mysqli::__construct
- mysqli_connect_error() - Returns a string description of the last connect error
- mysqli_errno() - Returns the error code for the most recent function call
- mysqli_error() - Returns a string description of the last error
- mysqli_sqlstate() - Returns the SQLSTATE error from previous MySQL operation
add a note
User Contributed Notes 2 notes
Daro AP ¶
6 years ago
till at etill dot net ¶
4 years ago
As of 5.5.9, connect_errno will not show an error if the host or the user (or both) are empty strings, so such cases have to be accounted for separately.
