mysqli_connect_errno Returns the error code from last connect call intmysqli_connect_errno void The mysqli_connect_errno function will return the last error code number for last call to mysqli_connect. 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. An error code value for the last call to mysqli_connect, if it failed. zero means no error occurred. mysqli_connect, mysqli_connect_error, mysqli_errno, mysqli_error, mysqli_sqlstate ]]>