mysqli_errno mysqli->errno Returns the error code for the most recent function call Procedural style: intmysqli_errno mysqlilink Object oriented style (property): mysqli interrno The mysqli_errno function will return the last error code for the most recent MySQLi function call that can succeed or fail with respect to the database link defined by the link parameter. If no errors have occured, this function will return zero. Client error message numbers are listed in the MySQL errmsg.h header file, server error message numbers are listed in mysqld_error.h. In the MySQL source distribution you can find a complete list of error messages and error numbers in the file Docs/mysqld_error.txt. &reftitle.returnvalues; An error code value for the last call, if it failed. zero means no error occurred. &reftitle.seealso; mysqli_connect_errno, mysqli_connect_error, mysqli_error&listendand; mysqli_sqlstate. &reftitle.examples; query("SET a=1")) { printf("Errorcode: %d\n", $mysqli->errno); } /* close connection */ $mysqli->close(); ?> ]]> ]]> &example.outputs;