IMPRESS dotted_line CONTACT dotted_line search dotted_line Kontakt dotted_line sitemap dotted_line print
252 PHP-Resource users online

Switch to another languags Deutsch aktuelle Sprache Englisch
php-resource

PHP Manual


mysql_error

(PHP 4, PHP 5)

mysql_errorReturns the text of the error message from previous MySQL operation

Description

string mysql_error ([ resource $link_identifier = NULL ] )

Returns the error text from the last MySQL function. Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_error() to retrieve the error text. Note that this function only returns the error text from the most recently executed MySQL function (not including mysql_error() and mysql_errno()), so if you want to use it, make sure you check the value before calling another MySQL function.

Parameters

link_identifier

The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If no connection is found or established, an E_WARNING level error is generated.

Return Values

Returns the error text from the last MySQL function, or '' (empty string) if no error occurred.

Examples

Example #1 mysql_error() example

<?php
$link 
mysql_connect("localhost""mysql_user""mysql_password");

mysql_select_db("nonexistentdb"$link);
echo 
mysql_errno($link) . ": " mysql_error($link). "\n";

mysql_select_db("kossu"$link);
mysql_query("SELECT * FROM nonexistenttable"$link);
echo 
mysql_errno($link) . ": " mysql_error($link) . "\n";
?>

The above example will output something similar to:

1049: Unknown database 'nonexistentdb'
1146: Table 'kossu.nonexistenttable' doesn't exist

See Also




Comments to the PHP manual
Write new comment
 



 

New Tutorial entries

Migration einer PHP 5 App auf PHP 7

Dieses PHP 7 Tutorial zeigt dir, wie du dein PHP5 Script auf PHP7 umstellst.

Berni | Category: PHP
PHP 7 Virtual Machine

Dieser Artikel zielt darauf ab, einen Überblick über die Zend Virtual Machine, wie es in PHP 7 gefunden wird.

Berni | Category: PHP
plotting masters - a professional guide - Teil II

Grafische Interpolation und Bestapproximation von numerischen Wertepaaren: Wir wollen Punkte auf einer Zeichenebene über verschiedene Verfahren miteinander verbinden.

EVAMasters | Category: PHP