Re: isset
| From: | Richard Lynch | Date: | Mon, 16 Apr 2007 22:51:16 +0000 |
| Subject: | Re: isset | ||
| References: | 1 2 3 4 5 6 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-253072@lists.php.net to get a copy of this message | ||
On Mon, April 16, 2007 11:18 am, Jim Lucas wrote:
> these two lines are not the same infact, with the first, you will not
> get a E_NOTICE warning, but
> with the second you will.
I dunno what you are thinking of, but the manual says:
"empty() is the opposite of (boolean) var, except that no warning is
generated when the variable is not set."
I am reasonably certain that "empty", like "isset" is not, in fact, a
function, but is a language construct (like "if" and "foreach") and it
does not attempt to use the variable per se, so does not generate an
E_NOTICE.
I am also reasonably certain that this has been true since "empty"
debuted in the language, but won't swear to that in court.
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