Hi guys,
What's the best way to test for an empty form value ? I am doing it like
this now:
$test = $_POST['inputTest'];
if(strlen($test ) < 1)
// it is empty !
Maybe I can just go:
if($test == '') // that's two single-quotes with nothing in between
// it is empty !
At least I avoid a function call that way. Maybe there is a better way ?
Take care,
Cyrus
4  2313 
Either way should work find, the second way may have less load on the
server, but honestly neither of them would cause too much... So
whatever is your preference. I ususally do it the second way and never
had a problem with it.
> What's the best way to test for an empty form value ? I am doing it like this now:
$test = $_POST['inputTest'];
if(strlen($test ) < 1)
// it is empty !
Maybe I can just go:
if($test == '') // that's two single-quotes with nothing in between
// it is empty !
It has been my experience that the function "empty()" has not failed me.
If you have a string, "" or '' or "0" is empty.
If you have a numeric variable, 0 is empty
Arrays with no elements is empty
A class property that has been declared but not used (set) is empty
A boolean variable that is FALSE is empty
NULL values are empty
Any object with no properties set is empty http://www.php.net/empty
_______________ _______________ ______
Wil Moore III, MCP | Integrations Specialist | Assistant Webmaster $test = $_POST['inputTest'];
if(strlen($test ) < 1)
// it is empty !
Maybe I can just go:
if($test == '') // that's two single-quotes with nothing in between
// it is empty !
Also, do not forget, if you are testing for a key in an array such as your example: $_POST['inputTest'];
you can do isset($_POST['inputTest']) or you can use array_key_exist s('inputTest', $_POST)
If you KNOW the key is there, but you just want to know if it has a NULL or "empty" value, your best bet is to run it through the empty() function.
_______________ _______________ ______
Wil Moore III, MCP | Integrations Specialist | Assistant Webmaster
The foolproof way to check for an empty string is always strlen($var) < 1.
You may also want to use trim() to remove any leading/trailing spaces.
--
Tony Marston http://www.tonymarston.net
"Cyrus D." <sa***@invalid. org> wrote in message
news:p7******** *************@n ews4.srv.hcvlny .cv.net... Hi guys,
What's the best way to test for an empty form value ? I am doing it like
this now:
$test = $_POST['inputTest'];
if(strlen($test ) < 1)
// it is empty !
Maybe I can just go:
if($test == '') // that's two single-quotes with nothing in between
// it is empty !
At least I avoid a function call that way. Maybe there is a better way ?
Take care,
Cyrus
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