Sorry missed to post list as well

Hi Daniel,
here is wild goose

i assume you have 3 x =
in your "problem" formulation
which could possibly result in the akward standard C mixup;
the rightmost = first parsed and resulting in an ASSIGMENT to the variable with that value, the comes the parsing of == which is the equivalence test, and see; the variable is the same since it was just assigned that value; if this theory is correct you would
get TRUE regardless what number is following :)

----- Original Message ----- From: "BUSCHKE Daniel" <>
To: <>
Sent: Thursday, June 13, 2013 9:59 AM
Subject: [PHP] PHP is Zero

Hi all,
I want to start a discussion about a PHP behaviour that drives me crazy for years. For the beginning I would like you to guess what the result of the following snippet will be:

var_dump('PHP' == 0);

I know the difference of == and === but the result was unexcpected for me. And I hope it is also for you. The result is simply "true". Why is it true? I guess this happens because of the conversion from 'PHP' to a number which will be 0 in PHP. And of course 0 equals 0. There are several points that I just want to drop into this mailinglist to discuss about:

1. Why? :)
2. Why is PHP converting the String into a Number instead of converting the Number into a String? (If my guess concerning the behaviour is correct) 3. Why is PHP throwing data away which has the developer explicit given to the interpreter? 4. Why does var_dump(0 == 'PHP'); has the same result as the snippet above? This meens that the equal operator is not explictly implemented in the string or integer? 5. Thats a bug I have opend: where I also had the same problems because "8315e839da08e2a7afe6dd12ec58245d" was converted into float(INF) by throwing everything starting from "da08.." away.

I am using PHP since the year 2000. This means I have 13 years of experience in PHP and I really would like you to NOT just answer "works as designed". I know it works as designed but I want to discuss the design. Also I know that the "fuzzy" behaviour of type conversion is a main feature of PHP. I guess this is one point which makes PHP that successfull. But - in my opinion - the described behaviour is to fuzzy and just confuses developers.

Best Regards
Daniel Buschke

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