note 25975 added to function.empty
| From: | chris at chaska dot php dot net | Date: | Sun, 13 Oct 2002 23:24:25 +0000 |
| Subject: | note 25975 added to function.empty | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-38037@lists.php.net to get a copy of this message | ||
I've not yet found a useful purpose for the empty() function in three and half years of
programming with PHP. I'm sure there is one, but most of the time I want to know if any useful
information is in a string variable. Here's how I check for that:
function is_blank( $var ) {
if ( ! isset( $var ) ) return TRUE;
if ( strlen( trim ($var) ) == 0) return TRUE;
return FALSE;
}
Thus, if the string is *empty* of useful information (whitespace is defined as uninteresting) or for
some reason not even set, is_blank() returns TRUE. In all other cases, it returns FALSE.
--
http://www.php.net/manual/en/function.empty.php
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