note 29712 modified in function.empty by philip

[[[Editors note: It depends on what a person wants and it's not uncommon for someone to want '0' to be seen as empty. In PHP3, the string '0' was not considered empty. Anyway, doing $foo == '' is an option but it will shout an E_NOTICE level error if $foo is not set. strlen() would also provide this E_NOTICE error, as would if($foo).]]] I do not use empty() nor isset() to check form input. When I want to know if some field has been filled in, I simply check if $field!=''. My reasons are: -empty() fails if the field has 0 (the zero value), which may be a value I need. -isset() always returns true for a POST var, even if the form field was empty. So instead of... if (!empty($field)) {...} // bad ...or... if (isset($field)) {...} // bad ...I use if ($field != '') {...} // good! As other comments here, I also believe empty() would be more use useful if it returned true for 0. --was-- I do not use empty() nor isset() to check form input. When I want to know if some field has been filled in, I simply check if $field!=''. My reasons are: -empty() fails if the field has 0 (the zero value), which may be a value I need. -isset() always returns true for a POST var, even if the form field was empty. So instead of... if (!empty($field)) {...} // bad ...or... if (isset($field)) {...} // bad ...I use if ($field != '') {...} // good! As other comments here, I also believe empty() would be more use useful if it returned true for 0. http://www.php.net/manual/en/function.empty.php