Hmmm, then the book "Beginning PHP" from Wrox is wrong...


Jason Wong wrote:
> On Friday 16 August 2002 17:54, José Jeria wrote:
>>I have a page with a checkbox, when i submit to the next page the
>>variable $whatever (the checkboxes name.) will be "On" if its checked,
>>and it will be undefined if its not checked.
>>Shouldn't it be a empty string? and not undefined?
> That is how it works. If it's not checked it does not get defined.

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