Re: [PHP-DB] Re: PDO Mysql data truncation missing error

[Karl DeSaulniers]

On Aug 21, 2012, at 3:44 PM, Matt Pelmear wrote:


Amit,

Thanks for the suggestion. Unfortunately, even when I explicitly  
enable E_WARNING or even E_ALL error reporting in php I still do not  
receive any indication that data was truncated on insert.


-Matt

On 08/21/2012 07:09 AM, Amit Tandon wrote:


Dear Matt,

Even with MySQL, u get the warning as the show warnings is enabled.  
With php bound scripts, you have to check warnings  to see the  
warnings. However, php is quite flexible and you an use  
error_reporting(E_WARNING) for non-fatal error reporting


regds
amit

On Aug 21, 2012 10:41 AM, "Matt Pelmear" mailto:mjpelm...@gmail.com 
>> wrote:


   On 08/21/2012 01:08 AM, David Robley wrote:

   Matt Pelmear wrote:

   Hello,

   I'm trying to detect data truncation on insert to MySQL
   using PDO.

   As far as I can tell, this gets reported at least in some
   cases (ex:
   http://drupal.org/node/1528628), but I have been unable to
   see this
   myself.

   The test table I'm using has a column that is VARCHAR(5):

   mysql>  describe test;
   +---+--+--+-+- 
+---+
   | Field | Type | Null | Key | Default |  
Extra |
   +---+--+--+-+- 
+---+
   | id| int(10) unsigned | YES  | | NULL 
|   |
   | data  | varchar(5)   | YES  | | NULL 
|   |
   +---+--+--+-+- 
+---+

   2 rows in set (0.00 sec)


   My test script inserts a ten character string into the 5
   character column:

    PHP TEST CODE 

   $pdo = new PDO(
 'mysql:host=localhost;dbname=test',
 'username',
 'password'
   );

   $pdo->setAttribute(PDO::ATTR_ERRMODE,  
PDO::ERRMODE_EXCEPTION);


   $retval = $pdo->query( 'INSERT INTO `test` (data) VALUES
   ("1234567890")'
   );

   print_r( $retval );

    END TEST CODE 

   This results in a new row in the `test` table, truncated
   after the 5th
   character as expected, but the truncation is not reported.
   (running in
   php 5.3.2 and 5.3.4)
   Running the same query directly in the mysql command line
   shows a
   warning as expected.

   Am I missing something simple here?

   Thanks,
   Matt

   Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING
   attribute may do
   what you want?



   Cheers


   Interesting idea. I gave it a try, but got the same result!
   I think PDO::ERRMODE_WARNING tells PDO to give PHP warnings versus
   throw exceptions when there are problems (if I'm understanding it
   properly).

   -Matt

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Forgive me if I am off, but why would you check to see if a string is  
truncated in your database?
Wouldn't you just check to make sure a string is a certain length in  
PHP first and then instert it into the database?

Then you know for sure that nothing is getting truncated?

Best,

Karl DeSaulniers
Design Drumm
http://designdrumm.com


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Re: [PHP-DB] Re: PDO Mysql data truncation missing error

[Bastien Koert]

On Tue, Aug 21, 2012 at 4:44 PM, Matt Pelmear  wrote:
> Amit,
>
> Thanks for the suggestion. Unfortunately, even when I explicitly enable
> E_WARNING or even E_ALL error reporting in php I still do not receive any
> indication that data was truncated on insert.
>
> -Matt
>
>
> On 08/21/2012 07:09 AM, Amit Tandon wrote:
>>
>>
>> Dear Matt,
>>
>> Even with MySQL, u get the warning as the show warnings is enabled. With
>> php bound scripts, you have to check warnings  to see the warnings. However,
>> php is quite flexible and you an use error_reporting(E_WARNING) for
>> non-fatal error reporting
>>
>> regds
>> amit
>>
>> On Aug 21, 2012 10:41 AM, "Matt Pelmear" > > wrote:
>>
>> On 08/21/2012 01:08 AM, David Robley wrote:
>>
>> Matt Pelmear wrote:
>>
>> Hello,
>>
>> I'm trying to detect data truncation on insert to MySQL
>> using PDO.
>>
>> As far as I can tell, this gets reported at least in some
>> cases (ex:
>> http://drupal.org/node/1528628), but I have been unable to
>>
>> see this
>> myself.
>>
>> The test table I'm using has a column that is VARCHAR(5):
>>
>> mysql>  describe test;
>> +---+--+--+-+-+---+
>>
>> | Field | Type | Null | Key | Default | Extra |
>> +---+--+--+-+-+---+
>>
>> | id| int(10) unsigned | YES  | | NULL|   |
>> | data  | varchar(5)   | YES  | | NULL|   |
>> +---+--+--+-+-+---+
>>
>> 2 rows in set (0.00 sec)
>>
>>
>> My test script inserts a ten character string into the 5
>> character column:
>>
>>  PHP TEST CODE 
>>
>> $pdo = new PDO(
>>   'mysql:host=localhost;dbname=test',
>>   'username',
>>   'password'
>> );
>>
>> $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
>>
>>
>> $retval = $pdo->query( 'INSERT INTO `test` (data) VALUES
>> ("1234567890")'
>> );
>>
>> print_r( $retval );
>>
>>  END TEST CODE 
>>
>> This results in a new row in the `test` table, truncated
>> after the 5th
>> character as expected, but the truncation is not reported.
>> (running in
>> php 5.3.2 and 5.3.4)
>> Running the same query directly in the mysql command line
>> shows a
>> warning as expected.
>>
>> Am I missing something simple here?
>>
>> Thanks,
>> Matt
>>
>> Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING
>> attribute may do
>> what you want?
>>
>>
>>
>> Cheers
>>
>>
>> Interesting idea. I gave it a try, but got the same result!
>> I think PDO::ERRMODE_WARNING tells PDO to give PHP warnings versus
>> throw exceptions when there are problems (if I'm understanding it
>> properly).
>>
>> -Matt
>>
>> -- PHP Database Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>


MySQL will silently truncate it without throwing an error, unless
you've looked into enabling alternate behavior. Set
STRICT_TRANS_TABLES (for InnoDB) or STRICT_ALL_TABLES (for any storage
engine) in MySQL's config and it'll throw the following error instead
of silently truncating data:
[Err] 1406 - Data too long for column '[some column]' at row [XYZ]
Does that help?
-- 

Bastien

Cat, the other other white meat

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Re: [PHP-DB] Re: PDO Mysql data truncation missing error

[Matt Pelmear]

Amit,

Thanks for the suggestion. Unfortunately, even when I explicitly enable 
E_WARNING or even E_ALL error reporting in php I still do not receive 
any indication that data was truncated on insert.


-Matt

On 08/21/2012 07:09 AM, Amit Tandon wrote:


Dear Matt,

Even with MySQL, u get the warning as the show warnings is enabled. 
With php bound scripts, you have to check warnings  to see the 
warnings. However, php is quite flexible and you an use 
error_reporting(E_WARNING) for non-fatal error reporting


regds
amit

On Aug 21, 2012 10:41 AM, "Matt Pelmear" > wrote:


On 08/21/2012 01:08 AM, David Robley wrote:

Matt Pelmear wrote:

Hello,

I'm trying to detect data truncation on insert to MySQL
using PDO.

As far as I can tell, this gets reported at least in some
cases (ex:
http://drupal.org/node/1528628), but I have been unable to
see this
myself.

The test table I'm using has a column that is VARCHAR(5):

mysql>  describe test;
+---+--+--+-+-+---+
| Field | Type | Null | Key | Default | Extra |
+---+--+--+-+-+---+
| id| int(10) unsigned | YES  | | NULL|   |
| data  | varchar(5)   | YES  | | NULL|   |
+---+--+--+-+-+---+
2 rows in set (0.00 sec)


My test script inserts a ten character string into the 5
character column:

 PHP TEST CODE 

$pdo = new PDO(
  'mysql:host=localhost;dbname=test',
  'username',
  'password'
);

$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$retval = $pdo->query( 'INSERT INTO `test` (data) VALUES
("1234567890")'
);

print_r( $retval );

 END TEST CODE 

This results in a new row in the `test` table, truncated
after the 5th
character as expected, but the truncation is not reported.
(running in
php 5.3.2 and 5.3.4)
Running the same query directly in the mysql command line
shows a
warning as expected.

Am I missing something simple here?

Thanks,
Matt

Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING
attribute may do
what you want?



Cheers


Interesting idea. I gave it a try, but got the same result!
I think PDO::ERRMODE_WARNING tells PDO to give PHP warnings versus
throw exceptions when there are problems (if I'm understanding it
properly).

-Matt

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Re: [PHP-DB] Re: PDO Mysql data truncation missing error

[Amit Tandon]

Dear Matt,

Even with MySQL, u get the warning as the show warnings is enabled. With
php bound scripts, you have to check warnings  to see the warnings.
However, php is quite flexible and you an use error_reporting(E_WARNING)
for non-fatal error reporting

regds
amit
On Aug 21, 2012 10:41 AM, "Matt Pelmear"  wrote:

> On 08/21/2012 01:08 AM, David Robley wrote:
>
>> Matt Pelmear wrote:
>>
>>  Hello,
>>>
>>> I'm trying to detect data truncation on insert to MySQL using PDO.
>>>
>>> As far as I can tell, this gets reported at least in some cases (ex:
>>> http://drupal.org/node/1528628**), but I have been unable to see this
>>> myself.
>>>
>>> The test table I'm using has a column that is VARCHAR(5):
>>>
>>> mysql>  describe test;
>>> +---+--+--**+-+-+---+
>>> | Field | Type | Null | Key | Default | Extra |
>>> +---+--+--**+-+-+---+
>>> | id| int(10) unsigned | YES  | | NULL|   |
>>> | data  | varchar(5)   | YES  | | NULL|   |
>>> +---+--+--**+-+-+---+
>>> 2 rows in set (0.00 sec)
>>>
>>>
>>> My test script inserts a ten character string into the 5 character
>>> column:
>>>
>>>  PHP TEST CODE 
>>>
>>> $pdo = new PDO(
>>>   'mysql:host=localhost;dbname=**test',
>>>   'username',
>>>   'password'
>>> );
>>>
>>> $pdo->setAttribute(PDO::ATTR_**ERRMODE, PDO::ERRMODE_EXCEPTION);
>>>
>>> $retval = $pdo->query( 'INSERT INTO `test` (data) VALUES ("1234567890")'
>>> );
>>>
>>> print_r( $retval );
>>>
>>>  END TEST CODE 
>>>
>>> This results in a new row in the `test` table, truncated after the 5th
>>> character as expected, but the truncation is not reported. (running in
>>> php 5.3.2 and 5.3.4)
>>> Running the same query directly in the mysql command line shows a
>>> warning as expected.
>>>
>>> Am I missing something simple here?
>>>
>>> Thanks,
>>> Matt
>>>
>> Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING attribute may
>> do
>> what you want?
>>
>>
>>
>> Cheers
>>
>
> Interesting idea. I gave it a try, but got the same result!
> I think PDO::ERRMODE_WARNING tells PDO to give PHP warnings versus throw
> exceptions when there are problems (if I'm understanding it properly).
>
> -Matt
>
> --
> PHP Database Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>

Re: [PHP-DB] Re: PDO Mysql data truncation missing error

[Matt Pelmear]

On 08/21/2012 01:08 AM, David Robley wrote:

Matt Pelmear wrote:


Hello,

I'm trying to detect data truncation on insert to MySQL using PDO.

As far as I can tell, this gets reported at least in some cases (ex:
http://drupal.org/node/1528628), but I have been unable to see this
myself.

The test table I'm using has a column that is VARCHAR(5):

mysql>  describe test;
+---+--+--+-+-+---+
| Field | Type | Null | Key | Default | Extra |
+---+--+--+-+-+---+
| id| int(10) unsigned | YES  | | NULL|   |
| data  | varchar(5)   | YES  | | NULL|   |
+---+--+--+-+-+---+
2 rows in set (0.00 sec)


My test script inserts a ten character string into the 5 character column:

 PHP TEST CODE 

$pdo = new PDO(
  'mysql:host=localhost;dbname=test',
  'username',
  'password'
);

$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$retval = $pdo->query( 'INSERT INTO `test` (data) VALUES ("1234567890")'
);

print_r( $retval );

 END TEST CODE 

This results in a new row in the `test` table, truncated after the 5th
character as expected, but the truncation is not reported. (running in
php 5.3.2 and 5.3.4)
Running the same query directly in the mysql command line shows a
warning as expected.

Am I missing something simple here?

Thanks,
Matt

Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING attribute may do
what you want?



Cheers


Interesting idea. I gave it a try, but got the same result!
I think PDO::ERRMODE_WARNING tells PDO to give PHP warnings versus throw 
exceptions when there are problems (if I'm understanding it properly).


-Matt

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To unsubscribe, visit: http://www.php.net/unsub.php

[PHP-DB] Re: PDO Mysql data truncation missing error

[David Robley]

Matt Pelmear wrote:

> Hello,
> 
> I'm trying to detect data truncation on insert to MySQL using PDO.
> 
> As far as I can tell, this gets reported at least in some cases (ex:
> http://drupal.org/node/1528628), but I have been unable to see this
> myself.
> 
> The test table I'm using has a column that is VARCHAR(5):
> 
> mysql> describe test;
> +---+--+--+-+-+---+
> | Field | Type | Null | Key | Default | Extra |
> +---+--+--+-+-+---+
> | id| int(10) unsigned | YES  | | NULL|   |
> | data  | varchar(5)   | YES  | | NULL|   |
> +---+--+--+-+-+---+
> 2 rows in set (0.00 sec)
> 
> 
> My test script inserts a ten character string into the 5 character column:
> 
>  PHP TEST CODE 
> 
> $pdo = new PDO(
>  'mysql:host=localhost;dbname=test',
>  'username',
>  'password'
> );
> 
> $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
> 
> $retval = $pdo->query( 'INSERT INTO `test` (data) VALUES ("1234567890")'
> );
> 
> print_r( $retval );
> 
>  END TEST CODE 
> 
> This results in a new row in the `test` table, truncated after the 5th
> character as expected, but the truncation is not reported. (running in
> php 5.3.2 and 5.3.4)
> Running the same query directly in the mysql command line shows a
> warning as expected.
> 
> Am I missing something simple here?
> 
> Thanks,
> Matt

Caveat: I don't use PDO but maybe the PDO::ERRMODE_WARNING attribute may do
what you want?



Cheers
-- 
David Robley

I'm not rude, I'm "attitudinally challenged".
Today is Pungenday, the 14th day of Bureaucracy in the YOLD 3178. 


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