scriptygoddess

22 Sep, 2004

Expression values

Posted by: Jennifer In: Bookmarks

For example if $x=""; what will empty($x) return? or is_null($x)? Or the even more surprising one: $x = "0" will return TRUE on empty() even though it is considered a string.

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2 Responses to "Expression values"

1 | Mark J

September 22nd, 2004 at 7:59 pm

Very tricky stuff… don't even get me started on the triple equals… if ($x === 1)

2 | michel

September 23rd, 2004 at 6:28 pm

This is why empty() blows and why it should be avoided.
(And why checking the data type is most usually a good idea if you need accurate results!)

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Expression values

2 Responses to "Expression values"

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