Re: Don't ejecute a sentence if a field is empty

[Jasper Bryant-Greene <jasper@xxxxxxxxxxxxxxxxxx>]

Jesús Alain Rodríguez Santos wrote:
> Hello I'm new:
> I need to know how can I stop a php sentence if my db is empty, for example
> I have writed a php sentence, if every fields from mmy db are full, there
> is no problem, but I delete every values from the all fields in my db when
> I ejecute my script mysql give me an error, Ej:
>
> $fecha = mysql_query("SELECT event_day, event_month, event_year FROM
> $db_table WHERE event_title = $dia_maximo");
> $fecha_max = mysql_fetch_array($fecha);
> $fecha_maxima = $fecha_max['event_day'];
> $diames_maximo = $fecha_max['event_month'];
>
> wehen I ejecute the script the error message is it:
>
> Warning: mysql_fetch_array(): supplied argument is not a valid MySQL
> result resource in /home/www/cfg/prueba/calendar_este2/index.php on line
> 277


$fecha = mysql_query("SELECT event_day, event_month, event_year FROM 
$db_table WHERE event_title = $dia_maximo");
if($fecha) {
	$fecha_max = mysql_fetch_array($fecha);

	$fecha_maxima = $fecha_max['event_day'];
	$diames_maximo = $fecha_max['event_month'];
} else {
	// No row returned...
}

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