NYCPHP Meetup

[Tim Gales]

"If the string starts with valid numeric data, 
this will be the value used. 
Otherwise, the value will be 0 (zero)."

http://us2.php.net/manual/en/language.types.string.php#language.types.stri
ng.conversion

T. Gales & Associates
'Helping People Connect with Technology'

http://www.tgaconnect.com


> -----Original Message-----
> From: talk-bounces at lists.nyphp.org 
> [mailto:talk-bounces at lists.nyphp.org] On Behalf Of Brian Kaney
> Sent: Friday, July 02, 2004 11:19 AM
> To: NYPHP Talk
> Subject: [nycphp-talk] What's going on here? PHP conditional.
> 
> 
> Just came across this problem.  Consider the following code:
> 
> <?php
> 
> echo "Equivalent: ";
> if (0 == 'Some String') { echo 'evaluates true'; } else { 
> echo 'evaluates false'; }
> 
> echo "\n";
> 
> echo "Equivalent and same type: ";
> if (0 === 'Some String') { echo 'evaluates true'; } else { 
> echo 'evaluates false'; }
> 
> ?>
> 
> I get 
> 
> Equivalent: evaluates true
> Equivalent and same type: evaluates false
> 
> 
> 
> Does anyone know why (0 == 'string') evaluates to true?   
> 
> According to the manual, the integer 0 converts to FALSE.  A 
> non-empty (or non-zero) string is considered TRUE. I would 
> think if (FALSE ==
> TRUE) should be evaluated as false?
> 
> http://us2.php.net/manual/en/language.types.boolean.php#langua
ge.types.boolean.casting


- Brian


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