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# mysql_errno

(PHP 3 <= 3.0.18, PHP 4 >= 4.0.0)

mysql_errno -- Returns the numerical value of the error message from previous MySQL operation

## Description

``int mysql_errno` (resource [link_identifier])`

Returns the error number from the last MySQL function, or `0` (zero) if no error occurred.

Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_errno() to retrieve the error code. Note that this function only returns the error code 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.

    <?php
    mysql_connect("marliesle");
    echo mysql_errno().": ".mysql_error()."<BR>";
    mysql_select_db("nonexistentdb");
    echo mysql_errno().": ".mysql_error()."<BR>";
    $conn = mysql_query("SELECT * FROM nonexistenttable");
    echo mysql_errno().": ".mysql_error()."<BR>";
    ?>

See also: mysql_error()

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