Php/docs/function.fbsql-errno
fbsql_errno
(PHP 4 >= 4.0.6, PHP 5 < 5.3.0)
fbsql_errno — Returns the error number from previous operation
说明
fbsql_errno
([ resource $link_identifier
] ) : int
Returns the numerical value of the error message from previous FrontBase operation.
Errors coming back from the fbsql database backend don't issue warnings. Instead, use fbsql_errno() to retrieve the error code. Note that this function only returns the error code from the most recently executed fbsql function (not including fbsql_error() and fbsql_errno()), so if you want to use it, make sure you check the value before calling another fbsql function.
参数
link_identifier由 fbsql_connect() 或 fbsql_pconnect() 返回的 FrontBase 链接标识符.
如可选并未指定，函数会尝试查找一个到 FrontBase 服务器的开放链接，且如没有找到这样的链接，会尝试通过不带参数调用 fbsql_connect() 来创建一个。
返回值
Returns the error number from the last fbsql function, or
0 (zero) if no error occurred.
范例
Example #1 fbsql_errno() Example
<?phpfbsql_connect("marliesle");echo fbsql_errno() . ": " . fbsql_error() . "<br />";fbsql_select_db("nonexistentdb");echo fbsql_errno() . ": " . fbsql_error() . "<br />";$conn = fbsql_query("SELECT * FROM nonexistenttable;");echo fbsql_errno() . ": " . fbsql_error() . "<br />";?>
参见
- fbsql_error() - Returns the error message from previous operation
- fbsql_warnings() - Enable or disable FrontBase warnings
