Simple PHP Delete MySQL Records Function

function fn_delete_records($agent)
{
$query="delete from tbl_lpp where agent_id='$agent'";
$result=mysql_query($query) or fn_mysql_error($query,__LINE__,mysql_error());
}

function fn_mysql_error($query,$line,$mysql_error)
{
echo <<<__HTML__ <br><b>Line</b>   : $line
<br><b>Query</b>   : $query
<br><b>MySql Error</b> : $mysql_error
__HTML__;
exit;
}