[PHP-DEV] Bug #12876 Updated: Comparison with zero (0) returns TRUE

2001-08-21 Thread derick 

ID: 12876
Updated by: derick
Reported By: [EMAIL PROTECTED]
Old Status: Open
Status: Bogus
Bug Type: Strings related
Operating System: Linux Debian 2.2r2 (testing)
PHP Version: 4.0.6
New Comment:

You miss something :) Strings will be converted to a number first, which is not 
possible. The result of this conversion is 0, and (0 == 0) = TRUE.

Derick

Previous Comments:


[2001-08-21 10:27:54] [EMAIL PROTECTED]

When strings are compared to 0, they always return TRUE.

?php
$test = 'somestring';
if( $test == 'somestring')
echo Match 1\n;
if( $test == 0 )
echo Match 2\n;
if( $test == 1 )
echo Match 3\n;
if( $test != 0 )
echo Match 4\n;
if( $test != 'somestring' )
echo Match 5\n;
if( $test != 1 )
echo Match 6\n;
?

Expected Output:
Match 1


Actual Ouput:
Match 1
Match 2
Match 6

Is there something I'm missing?






Edit this bug report at http://bugs.php.net/?id=12876edit=1


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[PHP-DEV] Bug #12876 Updated: Comparison with zero (0) returns TRUE

2001-08-21 Thread ash 

ID: 12876
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Bogus
Bug Type: Strings related
Operating System: Linux Debian 2.2r2 (testing)
PHP Version: 4.0.6
New Comment:

This never used to be the case..  4.0.4
So basically don't use == to compare strings?  Does PHP convert to numbers when doing 
'test' == 'test'?

I have this situation

?php
// snip

$row = pg_fetch_row($result, 0);

while( list($field, $value) == each($row) )
{
   if( $field == 'stateid' )
 echo get_state_selector($conn, $value);
   else
 echo $value;

}?

pg_fetch_row by default returns keys as field names and as array elements.  
get_state_selector gets outputed for both $row[0] and $row[stateid].  I know I can 
change pg_fetch_row (which I will) to output field names only, but I haven't run into 
this in the past.  Has something changed?  (There was a point pre 4.0.3 where zero (0) 
didn't equal empty, and now it does.. as in 
$test = 0; 
if( empty($test) ) 
echo blah; 
)





Previous Comments:


[2001-08-21 10:31:29] [EMAIL PROTECTED]

You miss something :) Strings will be converted to a number first, which is not 
possible. The result of this conversion is 0, and (0 == 0) = TRUE.

Derick



[2001-08-21 10:27:54] [EMAIL PROTECTED]

When strings are compared to 0, they always return TRUE.

?php
$test = 'somestring';
if( $test == 'somestring')
echo Match 1\n;
if( $test == 0 )
echo Match 2\n;
if( $test == 1 )
echo Match 3\n;
if( $test != 0 )
echo Match 4\n;
if( $test != 'somestring' )
echo Match 5\n;
if( $test != 1 )
echo Match 6\n;
?

Expected Output:
Match 1


Actual Ouput:
Match 1
Match 2
Match 6

Is there something I'm missing?






Edit this bug report at http://bugs.php.net/?id=12876edit=1


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PHP Development Mailing List http://www.php.net/
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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[PHP-DEV] Bug #12876 Updated: Comparison with zero (0) returns TRUE

2001-08-21 Thread ash 

ID: 12876
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Bogus
Bug Type: Strings related
Operating System: Linux Debian 2.2r2 (testing)
PHP Version: 4.0.6
New Comment:

The above should have read pg_fetch_array not pg_fetch_row.

pg_fetch_array without setting result_type to PGSQL_ASSOC returns both field numbers 
and field names as array indexes.

Previous Comments:


[2001-08-21 10:43:08] [EMAIL PROTECTED]

This never used to be the case..  4.0.4
So basically don't use == to compare strings?  Does PHP convert to numbers when doing 
'test' == 'test'?

I have this situation

?php
// snip

$row = pg_fetch_row($result, 0);

while( list($field, $value) == each($row) )
{
   if( $field == 'stateid' )
 echo get_state_selector($conn, $value);
   else
 echo $value;

}?

pg_fetch_row by default returns keys as field names and as array elements.  
get_state_selector gets outputed for both $row[0] and $row[stateid].  I know I can 
change pg_fetch_row (which I will) to output field names only, but I haven't run into 
this in the past.  Has something changed?  (There was a point pre 4.0.3 where zero (0) 
didn't equal empty, and now it does.. as in 
$test = 0; 
if( empty($test) ) 
echo blah; 
)







[2001-08-21 10:31:29] [EMAIL PROTECTED]

You miss something :) Strings will be converted to a number first, which is not 
possible. The result of this conversion is 0, and (0 == 0) = TRUE.

Derick



[2001-08-21 10:27:54] [EMAIL PROTECTED]

When strings are compared to 0, they always return TRUE.

?php
$test = 'somestring';
if( $test == 'somestring')
echo Match 1\n;
if( $test == 0 )
echo Match 2\n;
if( $test == 1 )
echo Match 3\n;
if( $test != 0 )
echo Match 4\n;
if( $test != 'somestring' )
echo Match 5\n;
if( $test != 1 )
echo Match 6\n;
?

Expected Output:
Match 1


Actual Ouput:
Match 1
Match 2
Match 6

Is there something I'm missing?






Edit this bug report at http://bugs.php.net/?id=12876edit=1


-- 
PHP Development Mailing List http://www.php.net/
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]