PHP string comparison with no quotes

Posted by tronman on Stack Overflow See other posts from Stack Overflow or by tronman
Published on 2010-05-04T18:16:53Z Indexed on 2010/05/04 18:18 UTC
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From what I know about PHP, the following syntax is not legal:

if ($s == Yes)

It should instead be written as:

if ($s == 'Yes')

However, the first example is working just fine. Anyone know why?

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