Jump to content

Comparing directory loop codes. :)


bilis_money

Recommended Posts

hi, PHP addicted?

Can you tell me why the manual suggested the first while loop over the directory is the correct one?
[code]
<?php      
          // This is the correct way to loop over the directory.
       while (false !== ($file = readdir($handle))) {
           echo "$file\n";
           echo "<br>";
       }


       // This is the WRONG way to loop over the directory.
       while ($file = readdir($handle)) {
           echo "$file<br>";
       }
?>
[/code]


Thanks in advance.
Link to comment
Share on other sites

they explain it right about the code:
[!--quoteo--][div class=\'quotetop\']QUOTE[/div][div class=\'quotemain\'][!--quotec--]
Please note the fashion in which readdir()'s return value is checked in the examples below. We are explicitly testing whether the return value is identical to (equal to and of the same type as--see Comparison Operators for more information) FALSE since otherwise, any directory entry whose name evaluates to FALSE will stop the loop (e.g. a directory named "0").
[/quote]
Link to comment
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.