mysql_errno
mysql_escape_string
MySQL Functions
PHP Manual

# mysql_error

(PHP 4, PHP 5)

mysql_error — Returns the text of the error message from previous MySQL operation

### Description

string mysql_error ([ resource `$link_identifier` ] )

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 by chance 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

- mysql_errno()
- » MySQL error codes

mysql_errno
mysql_escape_string
MySQL Functions
PHP Manual