[PHP] RTFM code snippet

[mike cullerton]

hey folks, hope the new year is treating everyone well.

i was RTFMing yesterday and ran across this piece of code

  while (false !== ($file = readdir($handle))) {

which is similar to stuff i've done

  while ($file = readdir($dir)) {

so, what am i not catching with my code, and what is really going on in the
RTFM code with the false !== part?

thanks y'all,
mike

 -- mike cullerton


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Re: [PHP] RTFM code snippet

[Andrey Hristov]

I'm not sure if a resource casted to numeric to be 0 - var_dump() to say :(0) resource 
of type 
!==flase assures that it is FALSE, not 0.
!== is like != but makes type checking. Frequently used with strpos(). See the memos 
there.
There is also available === operator. It is like == but also makes type comparison.

Regards,
Andrey Hristov

- Original Message - 
From: mike cullerton [EMAIL PROTECTED]
To: php-general [EMAIL PROTECTED]
Sent: Friday, January 11, 2002 5:01 PM
Subject: [PHP] RTFM code snippet


 hey folks, hope the new year is treating everyone well.
 
 i was RTFMing yesterday and ran across this piece of code
 
   while (false !== ($file = readdir($handle))) {
 
 which is similar to stuff i've done
 
   while ($file = readdir($dir)) {
 
 so, what am i not catching with my code, and what is really going on in the
 RTFM code with the false !== part?
 
 thanks y'all,
 mike
 
  -- mike cullerton
 
 
 -- 
 PHP General Mailing List (http://www.php.net/)
 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]
 To contact the list administrators, e-mail: [EMAIL PROTECTED]
 
 


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