MySQL function library: Mysql_errno

Mysql_errno

(PHP3, PHP4)

Mysql_errno---Return an error message code from a previous MySQL operation

Syntax: int mysql_errno ([int link_identifier])

Description:

Returns the error message code from the last MySQL function, and returns 0 (zero) if no error occurs.

Errors returned from the MySQL repository can be obtained by using Mysql_errno () to obtain the error code, NOTE: This function returns the error codes only from the most recently executed MySQL functions (not including mysql_error () and Mysql_errno ()), so if you want to use it, Please make sure you have checked the value before calling other MySQL functions.

Example:

<?php

&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP; 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> ";

?>

Reference: Mysql_error ()