On Tue, 2007-05-15 at 17:27 +0100, Edward Kay wrote:
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > Sent: 15 May 2007 16:48
> > To: [email protected]
> > Subject: [PHP] PHP 5.2 array() == null
> >
> >
> > Hi people
> >
> > i was just curios to ask whether
> >
> > array() == null should always return true. and then why
> >
> > i'm testing this with php 5.2.2
> >
> > greetings
> >
> > dominic letz
> >
>
> According to Table Q.2 at
> http://www.php.net/manual/en/types.comparisons.php, array() == NULL will
> always return TRUE.
>
> Remember == is a loose comparison. I think this is a result of the
> following:
>
> array() == FALSE is TRUE (because it's empty?)
Yes, being empty is why it is equivalent to boolean false. It makes it
simple and self explanatory to do code like the following:
<?php
if( $array )
{
// do something since it's not empty
}
else
{
// sorry nothing was found.
}
?>
This is preferable to using the count() function since no function
overhead is incurred.
Cheers,
Rob.
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