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mysql_errno
(PHP 3, PHP 4, PHP 5)
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.
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.
$driver = new mysqli_driver();
$driver->report_mode = MYSQLI_REPORT_STRICT;
try {
$result = $mysqli->query("。。。");
$result->close();
$mysqli->close();
} catch (mysqli_sql_exception $e) {
//。。。
}