[PHP] isset($a-b) even if $a-b = null

[Olav Mørkrid]

how do i test if a property of a stdclass object is set, even if its
value is null, similar to how array_key_exists() works for arrays.

the following method fails:

  $a-b = null;
  if(isset($a-b))
echo yes;

and property_exists() seems only to work for defined objects.

hope someone can help. thanks!

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: [PHP] isset($a-b) even if $a-b = null

[Borokov Smith]

Olav Mørkrid schreef:

how do i test if a property of a stdclass object is set, even if its
value is null, similar to how array_key_exists() works for arrays.

the following method fails:

  $a-b = null;
  if(isset($a-b))
echo yes;

and property_exists() seems only to work for defined objects.

hope someone can help. thanks!

  

if (isset($a - b)  $a - b != null) { echo yes; }

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: [PHP] isset($a-b) even if $a-b = null

[Michael Preslar]

On 8/17/07, Olav Mørkrid [EMAIL PROTECTED] wrote:
 how do i test if a property of a stdclass object is set, even if its
 value is null, similar to how array_key_exists() works for arrays.

 the following method fails:

   $a-b = null;
   if(isset($a-b))
 echo yes;

 and property_exists() seems only to work for defined objects.

 hope someone can help. thanks!

Seems your asking for something similar to perl's exists() function..
Best I can come up with is...

$a-b = null;

if (is_null($a-b) || isset($a-b)) {
print yes;
}

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php