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PHP Quiz PHP CertificatePHP mysql_errno() Function
Complete PHP MySQL Reference
Definition and Usage
The mysql_errno() function returns the error number of the last MySQL operation.
This function returns 0 (zero) if no error has occurred.
Syntax
mysql_errno(connection)
| Parameter | Description |
|---|---|
| connection | Optional. Specifies the MySQL connection. If not specified, the last connection opened by mysql_connect() or mysql_pconnect() is used. |
Example
In this example we will try to log on to a MySQL server with the wrong username and password:
<?php
$con = mysql_connect("localhost","wrong_user","wrong_pwd");
if (!$con)
{
die('Could not connect: ' . mysql_errno());
}
mysql_close($con);
?>
$con = mysql_connect("localhost","wrong_user","wrong_pwd");
if (!$con)
{
die('Could not connect: ' . mysql_errno());
}
mysql_close($con);
?>
The output of the code above could be:
Could not connect: 1045
Complete PHP MySQL Reference
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