| Re: pgsql and exception [message #178104 is a reply to message #178100] |
Mon, 14 May 2012 07:45   |
alvaro.NOSPAMTHANX
Messages: 277
Registered: September 2010
Karma:
|
Senior Member |
|
|
El 14/05/2012 8:39, Une Bévue escribió/wrote:
> I have an INSERT generating an exception :
> ERROR: value too long for type character varying(30)
>
> this error comes from try out usinf command line.
>
> I'd like to print-out this error when using this database from php.
>
> Then, i did :
>
> $ret=$db->query($sql);
> try {
> while($row=$ret->fetch()){ // line 492
> $rowid=$row['rowid'];
> }
> // do something
> } catch (Exception $e) {
> echo $e->getMessage()."<br />\n";
> }
>
> or using :
> } catch (PDOException $e) {
> echo $e->getMessage()."<br />\n";
> }
>
> From php i get :
> Fatal error: Call to a member function fetch() on a non-object in
> /Users/yt/Sites/landp_public/landp.php on line 492
>
> line 492 being "while($row=$ret->fetch()){"
>
> obviously the best way is to avoid having a varchar column with a length
> lower than 30.
This isn't a database error, it's a PHP error. The line where you define
$ret's current value:
$ret=$db->query($sql);
.... failed. Such function should return a object but it didn't
(probably, because it returned FALSE instead).
«Return Values: A query result resource on success or FALSE on failure.»
http://es.php.net/pg_query
Tips:
- Always do error checking when opening a DB connection and running a
SQL query: it's way more likely to get an error there than when
retrieving rows.
- You can inspect a variable with var_dump(), e.g.:
var_dump($ret);
--
-- http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
-- Mi sitio sobre programación web: http://borrame.com
-- Mi web de humor satinado: http://www.demogracia.com
--
|
|
|
|
Calendar
Search
Help
Members
Register
Login
Home
]